Abstract
This paper focuses on the supply chain consisting of a manufacturer, a third-party (3P) seller, and an e-platform, while the 3P seller sells products through the e-platform. If the e-platform not only provides a sales channel for the 3P seller, but also determines the retail price and then sells products directly, we call it e-platform encroachment, which creates price competition between the 3P seller and e-platform. We find that the encroachment benefits the manufacturer and e-platform but hurts the 3P seller. And both the manufacturer and 3P seller prefer the price discrimination strategy to the uniform pricing strategy, while the e-platform does not necessarily. The price discrimination strategy encourages the manufacturer to offer the 3P seller a preferential wholesale price as the compensation and to curb the competitive advantage of the e-platform. The two pricing strategies have the same total sales quantity but different allocations across channels. Moreover, we propose a new coordination mechanism to reduce the double marginalization effect and improve supply chain performance. In extensions, we demonstrate numerically how the e-platform should decide the commission rate and compare the e-platform encroachment model with the manufacturer encroachment model to reveal the impact of different encroachment roles on all parties in the supply chain.
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