2020 年 9 巻 1 号 p. 108-113
Coopetition has become increasingly important for firms not only to pursue competitive advantage on their own, but to create and capture value in collaborate with other firms, also with competing firms. The purpose of this study is to investigate how coopetition-based business models affect the sustainable relationship between competition and coopetition. In this study, we clarified when and how firms had changed the business model and what the driver will be, as hypotheses for future research. For gaining insights, we present a longitudinal single case study of Yahoo! News (Japan), as coopetition-based business model that competing firms had participated and designed in collaboration. We suggest four hypotheses for managing sustainable relationship of coopetition based on the notion of business models：(1)the sustainable relationship of coopetition is managed when each firm has unique resources and the imitation barrier of that resources is high, (2)the coopetition-based business model innovation is adopted caused of tension based on the coopetition, (3)the coopetition-based business model innovation is adopted when it mitigate tension, (4)the unique resource transformation between the firm affect the coopetition-based business model innovation. By explain these hypotheses, our study contributes to the previous literature and future research.