In this study, we analyze the impact of embeddedness in co-production networks within the film industry on the commercial success of movies. We aim to determine whether the success in the popular culture industry, particularly in the film industry, is attributable to the network characteristics of suppliers. To this end, drawing on insights from network theory and related prior research, we propose a set of hypotheses regarding the relationship between the structural embeddedness within the network among film production companies and their box office performance. To test these arguments, we collected detailed information on feature films shown in US box offices from IMDB, resulting in a dataset of 2,752 movies for analysis. We utilized network constraint as an indicator of network embeddedness, Employing OLS regression analysis, we confirmed an inverted U-shaped relationship between network constraint and box office revenue, as hypothesized. However, we also found that this relationship varies depending on the characteristics of the movie. In the case of movies with high artistic quality, multiple genres, or large production budgets, we observed a mitigation in the pattern of the inverted U-shaped relationship. The results of our study indicate that while network embeddedness at a moderate level provides movie production companies with ease of access to resources and information, excessive embeddedness can hinder creative diversity and innovation. Our research offers valuable insights, emphasizing the importance of maintaining balance and diversity in supplier networks for the healthy development and sustainability of the cultural and arts industry.