Increase Consumer Welfare Research Articles

Inference and Impact of Category Captaincy

This paper studies category captaincy, a vertical relationship where retailers delegate shelf placement and pricing decisions of an entire product category to one of the leading manufacturers within that category. These contracts involve preferential treatment given to certain brands within the retailer. However, they are confidential, and empirical analysis has been limited. To study the prevalence and welfare impact of these contracts, I develop a novel approach to infer the presence of captaincy contracts based on preferential treatment in shelf placement and pricing. I first classify retailers into different captaincy types based on a brand × retailer specific quality of shelf placement inferred from a demand model. I then conduct pricing tests and find that captains, in line with theoretical predictions and industry anecdotes, eliminate double markups from their own products but not from competitor products. Comparative statics show that captaincy relationships increase the market share of the captain, but they can also increase consumer welfare by about 5% due to the elimination of double markups on the captain’s products. This paper was accepted by Raphael Thomadsen, marketing. Supplemental Material: The online appendices and data files are available at https://doi.org/10.1287/mnsc.2023.02039 .

Has competition law enforcement been effective in South Africa?

ABSTRACT The South African Competition Act was crafted on the basis that it could be used to address distortions and inequalities in the market through enforcing competition. A question which has arisen is whether competition enforcement has been effective given that many economic sectors are still largely dominated by monopolies, duopolies or oligopolies. In this study, I assess whether competition enforcement has reduced inequality in South Africa by studying the link between market power and inequality, following a competition intervention in selected product markets. Using the nonlinear autoregressive distributed lag model, I assess whether competition enforcement in the market for bread, maize meal, and sunflower oil, has been effective in increasing consumer welfare, by lowering income inequality through lower prices. The findings of this study suggest that firms in these markets abuse their market power even post-intervention, such that they can raise prices and reduce consumer welfare, increasing inequality indirectly.

Competitive Bidding in Drug Procurement: Evidence from China

We study the equilibrium effects of introducing competitive bidding in drug procurement. In 2019, China introduced a competitive bidding program where drug companies bid for a prespecified procurement quantity in nine provinces. Using a difference-in-differences design, we show the program reduced average drug prices by 47.4 percent. Generic drugs won most bids and cut prices by 75.0 percent. We develop an equilibrium model to quantify the trade-off between lower prices and potential choice distortions. Competitive bidding increases consumer welfare if policymakers believe consumers should value branded and bioequivalent generic drugs equally. The program also reduced government expenditure on insurance by 19.8 percent. (JEL D44, G22, I18, L13, L65, P25, P31)

Impact of Consumer Data Value on Pricing of Platform Enterprise

Based on the background of digital economy, this paper mainly discusses the value of consumer data and the promotion effect of digital finance on enterprise entre-preneurship, and analyzes the differentiated choice of pricing strategy for platform enterprises under the situation that consumer data is known and unknown. Based on the linear city model, circular city model and vertical differentiation model, this paper constructs the competition system of platform enterprises in two situations: consumer data is known and consumer data is unknown, and reveals the influence of consumer data on the pricing strategy of platform enterprises. The research shows that consumer data can influence the pricing strategy of platform enterpris-es, and when consumer data is unknown to platform enterprises, they tend to choose unified pricing. At this time, consumers choose service types based on their preferences. If consumer data is known to platform enterprises, platform enter-prises will choose personalized pricing in order to compete with consumers in the market, but the price will be low, which will increase consumer welfare at the mi-cro level. Moreover, the development of digital finance based on the background of digital economy has a positive role in promoting new enterprises and affecting consumer welfare at the macro level, it has practical significance and profound re-search significance for the study of social welfare changes.

Innovation adoption by forward‐looking social learners

We build a model studying the effect of an economy's potential for social learning on the adoption of innovations of uncertain quality. Assuming consumers are forward‐looking (i.e., recognize the value of waiting for information), we analyze how qualitative and quantitative features of the learning environment affect equilibrium adoption dynamics, welfare, and the speed of learning. Based on this, we show how differences in the learning environment translate into observable differences in adoption dynamics, suggesting a purely informational channel for two commonly documented adoption patterns: S‐shaped and concave curves. We also identify environments that are subject to a saturation effect: Increased opportunities for social learning can slow down adoption and learning, and do not increase consumer welfare, possibly even being harmful.

On the bright side of market concentration in a mixed-oligopoly healthcare industry

We describe the healthcare industry as a mixed oligopoly, where a public and two private providers compete, and examine the effects of a merger between the two private healthcare providers on prices, quality, and welfare. When the price and (eventually) quality of the public provider are regulated, the cost synergies required for the merger to increase consumer welfare are less significant than in a setting with only profit-maximizing providers. When, instead, the public provider can adjust its policy to the rivals’ behavior and maximizes a weighted sum of profits and consumer surplus (i.e., it has ‘semi-altruistic’ preferences), the merger is consumer surplus increasing if the public provider is sufficiently altruist, in some cases even absent efficiencies. These results suggest that ignoring the role and objectives of the public sector in the healthcare industry may lead agencies to reject mergers that, while would decrease consumer welfare in fully privatized industries, would increase it in mixed oligopolies.

Development of the Russian Payment System in the Conditions of Digitalization of the World Economy

The subject of the study is the national payment system of Russia in the context of accelerating the processes of digitalization of the world economy. The purpose of the work is to identify the key areas of development of the national payment system. The article states the importance of expanding the capabilities of the Mir payment system in the direction of the development of P2P settlement mechanisms and Internet payments. The possibilities of using the payment system for the development of trade and economic cooperation with friendly countries have been identified, consisting in the formation of a single payment space of the EAEU, expanding the practice of connecting foreign banks to the payment system of the Bank of Russia, as well as increasing the volume of cooperation between state development institutions of the EAEU and SCO countries. The need to create favorable conditions for the work of Russian economic entities in the financial markets of friendly countries has been established. The prospects of issuing the digital ruble of the payment system are evaluated, its importance for increasing the innovative potential of the national payment system is emphasized. It is determined that the digitalization of payment systems can be considered as an additional factor in improving the quality of life, increasing consumer welfare and increasing human capital. The conclusion is made about the expediency of developing a system of fast payments by improving the settlements of economic entities with public authorities.

Equilibrium Effects of Food Labeling Policies

We study a regulation in Chile that mandates warning labels on products whose sugar or caloric concentration exceeds certain thresholds. We show that consumers substitute from labeled to unlabeled products—a pattern mostly driven by products that consumers mistakenly believe to be healthy. On the supply side, we find substantial reformulation of products and bunching at the thresholds. We develop and estimate an equilibrium model of demand for food and firms' pricing and nutritional choices. We find that food labels increase consumer welfare by 1.8% of total expenditure, and that these effects are enhanced by firms' responses. We then use the model to study alternative policy designs. Under optimal policy thresholds, food labels and sugar taxes generate similar gains in consumer welfare, but food labels benefit the poor relatively more.

Hybrid Marketplaces with Free Entry of Sellers

We study a hybrid marketplace such as Amazon that sells its own products and sets commissions on third-party sellers that engage in monopolistic competition with free entry. For a large class of microfoundations based on a representative agent, the introduction of its own products by the marketplace is neutral for consumer welfare for a given commission; but this product introduction exerts an ambiguous impact through changes of the commission. A “demand substitution mechanism” pushes for a higher commission; but an “extensive margin mechanism” pushes for a lower commission that is aimed at attracting new sellers and more purchases on the marketplace. For instance, with constant demand elasticities, a hybrid marketplace sets a lower (higher) commission rate and increases (decreases) consumer welfare compared to a pure marketplace if its products face a less (more) elastic demand.

Mergers and innovation portfolios

AbstractThis article studies mergers in markets where firms invest in a portfolio of research projects of different profitability and social value. The investment of a firm in one project imposes both a negative business‐stealing and a positive business‐giving externality on the rival firms. We show that when the project that is relatively more profitable for the firms appropriates a larger (smaller) fraction of the social surplus, a merger increases (decreases) consumer welfare by reducing investment in the most profitable project and increasing investment in the alternative project. The innovation portfolio effects of mergers may dominate the usual market power effects.

Identifying the role of alignment in developing innovation ecosystem: value co-creation between the focal firm and supplier

PurposeThis study explores how firms develop innovation ecosystems through forming alliances with suppliers and the effects on innovation, economics and consumer welfare.Design/methodology/approachThis study develops two game theory models to compare supply chain structures with and without ecosystem alignment. (1) A single supplier provides components to two competing manufacturers (one innovative and one non-innovative). (2) An innovative manufacturer (focal firm) aligns with a supplier that also supplies components to a competing manufacturer.FindingsAn ecosystem construction strategy that alliances use to reconfigure coopetitive relationships and ecosystem alignment is identified. A manufacturer aligning with a supplier will strengthen the monopoly of the alignment, which is beneficial to both Allies but always harmful to the competitor. Interestingly, such an ecosystem construction strategy may be beneficial to future innovation, the industry and consumers.Research limitations/implicationsThe findings raise several topics that warrant further exploration. For example, scenarios with multiple suppliers were not considered. Furthermore, the implementation of regulatory measures to mitigate the harmful effects of alignment on innovation should be investigated.Practical implicationsThis paper provides a guide for enterprises seeking alignment and to the corresponding measures required to stimulate innovation within ecosystems. What’s more, the aligned firm should not always attempt to win the race but should instead take measures to encourage the competitor to share demand information.Originality/valueFirstly, most research on supply chain management has focused on its economic impacts. There is a lack of research on the influence of ecosystem alignment on the innovation incentives of firms. Furthermore, the literature still lacks evidence of how ecosystem construction strategies can increase consumer welfare. In the present study, the authors model a complex market structure that includes a competitor, which is becoming increasingly common in high-tech markets. Thirdly, this paper is one of the few that examines the impacts of market-structure changes on innovation incentives. Most importantly, this study extends the current literature by studying coopetition in the ecosystem context.

The Interface of Competition law and blockchain Technology: a global Perspective

The rule of law does not govern all human interactions. There are times when the state bypasses legal constraints, as documented by the World Justice Project. Other times, jurisdictions may be mutually unfriendly and refuse to enforce foreign laws. Blockchains create trust between contracting parties at the individual level, enabling them to transact freely and increase consumer welfare. Blockchains can only supple-ment antitrust if the legal constraints do not impede their development. The law should thus support the decentralization of blockchains so that blockchain-based mechanisms may take over (even if imperfectly) where the law does not apply. With that in mind, we justify the attractiveness of that approach by showing that blockchain causes an increase in the number of transactions by creating trust (Part 1), and that it may overall increase the decentralization of economic transactions (Part 2). The law should take into account where it applies (Part 3). We conclude afterward (Part 4).

Modelling the Impact of Structural Policies on General Economic Equilibrium

Authors use the Computable General Equilibrium model to study the impact of a structural policy associated with declining import and export transaction costs in the economy of the Republic of Moldova. The results show that for most goods traded internationally, import prices are declining, which leads to increased consumer welfare. At the same time, the production capacity of the domestic economy is expanding and exporters are getting higher export prices, which boosts their competitiveness and leads to relatively faster growth of export deliveries compared to domestic deliveries. Benefits and costs of the scenario are quite evenly distributed territorially, although the well-being of households in industrialized urban areas is growing slightly faster compared to rural households. The obtained data confirm the international empirical results regarding the relevance of structural policies for long-term economic development.

Quality determinates of rice price in open bag markets in Sub-Saharan Africa

PurposeWeaknesses in the grades and standards system in low-income countries across Sub-Saharan Africa undermine the transparency of agricultural markets. In the Democratic Republic of the Congo (DRC), Ghana and Mozambique rice is predominately sold in open bags and if rice price does not reflect its quality, then inefficiencies may lead to consumer welfare losses. Importantly, it is possible that impoverished communities are priced out of the market due to inflated and inefficient prices. The objective of this study is to examine determinates of rice price by estimating the impact of selected rice quality attributes on rice prices in Democratic Republic of the Congo, Ghana and Mozambique.Design/methodology/approachWe collected 363 rice samples from open air markets in Bukavu (DRC), Nampula (Mozambique) and across Ghana in 2019. Each rice sample was analyzed in a food science lab for the quality attributes: percentage of chalk and brokens, chalk impact, length and length-to-width ratio. We used multiple regression analysis to estimate if and to what extent quality attributes were the drivers of price.FindingsFindings suggest that there are irregularities in the Ghanaian market for broken rice and that regardless of quality, imported rice is priced higher than domestic rice. In the DRC and Mozambique, our results indicate price is driven by length and length-to-width ratio in the former and length-to-width ratio in the latter.Research limitations/implicationsRice samples were purchased from market vendors and thus consumer preferences for attributes were not revealed.Originality/valueThese results provide valuable insight to policymakers regarding the need for proper labeling and regulation of open bag rice sales in an effort to increase consumer welfare and improve food security.

Sponsored Data: Smarter Data Pricing with Incomplete Information

With the development of data-intensive internet services, the world has witnessed explosive growth in mobile data consumption during the last couple of years. The upcoming generation of 5G-capable phones and networks will continue and even accelerate that process. At the same time, consumers are becoming more conscious about their data consumption because their monthly caps of mobile data plans can be easily exhausted by premium content, such as high-definition videos and virtual-reality games. In response, the mobile network operators (MNOs) have proposed a new business model, the so-called sponsored data plans, to subsidize consumers by transferring at least part of the data bills from consumers to content providers. Although industry practitioners claim that sponsored data plans increase consumer welfare, our analysis reveals that the impact of sponsored data on consumer surplus depends crucially on whether the MNO has complete information of the consumers’ valuation of mobile data. Our analysis helps provide a clearer picture of the impact of sponsored data on consumer surplus while reconciling the conflicting views from scholars, digital rights groups, and the network carriers.

Competition and Selection in Credit Markets

We present both theory and evidence that increased competition may decrease rather than increase consumer welfare in subprime credit markets. We present a model of lending markets with imperfect competition, adverse selection and costly lender screening. In more competitive markets, lenders have lower market shares, and thus lower incentives to monitor borrowers. Thus, when markets are competitive, all lenders face a riskier pool of borrowers, which can lead interest rates to be higher, and consumer welfare to be lower. We provide evidence for the model’s predictions in the auto loan market using administrative credit panel data.

Optimal Incentives for Patent Challenges in the Pharmaceutical Industry

In this paper, we show that a provision in antitrust law to allow patent settlements with a later market entry of generics than the date that is expected under patent litigation can increase consumer welfare. We introduce a policy parameter for determining the optimal additional period for collusion that would incentivize the challenging of weak patents and maximize consumer welfare. While in principle, later market entry leads to higher profits and lower consumer welfare, this can be more than compensated for if more patents are challenged as a result.

Search Externalities in Firm-to-Firm Trade

I develop a model of firm-to-firm search and matching to show that the impact of falling trade costs on firm sourcing decisions and consumer welfare depends on the relative size of search externalities in domestic and international markets. These externalities can be positive if firms share information about potential matches, or negative if the market is congested. Using unique firm-to-firm transaction-level data from Uganda, I document empirical evidence consistent with positive externalities in international markets and negative externalities in domestic markets. I then build a dynamic quantitative version of the model and show that, in Uganda, a 25% reduction in trade costs led to a 3.7% increase in consumer welfare, 12% of which was due to search externalities.

On the Bright Side of Market Concentration in a Mixed-Oligopoly Healthcare Industry

We describe the healthcare industry as a mixed oligopoly, where a public and two private providers compete, and examine the effects of a merger between two private healthcare providers on prices, quality, and consumer surplus. When the price and quality of the public provider are regulated, the cost synergies required for the merger to increase consumer welfare are less significant than in a setting with only profit-maximizing providers. When, instead, the public provider can adjust its policy to the rivals' behavior and maximizes a weighted sum of profits and consumer surplus (i.e., it has 'semi-altruistic' preferences), we find that the merger is consumer surplus increasing if the public provider is sufficiently altruist, in some cases even absent efficiencies. These results suggest that ignoring the role and objectives of the public sector in the healthcare industry may lead agencies to reject mergers that, while would decrease consumer welfare in fully privatized industries, would increase it in mixed oligopolies.

Competition and Selection in Credit Markets

We present both theory and evidence that increased competition may decrease rather than increase consumer welfare in subprime credit markets. We present a model of lending markets with imperfect competition, adverse selection and costly lender screening. In more competitive markets, lenders have lower market shares, and thus lower incentives to monitor borrowers. Thus, when markets are competitive, all lenders face a riskier pool of borrowers, which can lead interest rates to be higher, and consumer welfare to be lower. We provide evidence for the model’s predictions in the auto loan market using administrative credit panel data.