Does Supply Concentration Encourage Cooperation? Evidence from Airlines

The authors thank Charles Angelucci, Janet Bercovitz, Ronald Burt, Silke Forbes, Claudine Gartenberg, Oliver Hart, Bob Gibbons, Renata Kosova, Megan Lawrence, Fabrice Lumineau, Ameet Morjaria, Joanne Oxley, Catherine Thomas, Birger Wernerfelt, Todd Zenger, Minyuan Zhao, and audiences at Purdue University, London Business School, Duke University, Washington University in St. Louis, Tilburg University, University of Brussels, University of Hong Kong, University of Lausanne, University of Toronto, Imperial College, the National Bureau of Economic Research Organizational Economics Workshop, the Workshop on Relational Contracts, the Reputation Symposium, and the Strategy Science, Society for Institutional and Organizational Economics, and Strategic Management Society Conferences for many helpful comments. The usual disclaimer applies.