The purpose of this study is to reveal about the environmental change in collaboration with heterogeneous and homogeneous organizations through a case study of conflict minerals. The starting point of a change in market environment is collaboration of homogeneous organizational collaboration. The collaboration changes standards of the industry and spreads over heterogeneous organization and the market environment is being controlled. We discuss that CSR is practiced inter-organizational collaboration with homogeneous and heterogeneous organizations. The key player controls the market environment. Moreover, the key-player is legitimated through the process.