Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

Tuesday, January 21, 2014

Entry, exit, and the determinants of market structure

Timothy Dunne, Research Department, Federal Reserve Bank of Atlanta, , Shawn D. Klimek, Center for Economic Studies, U.S. Census Bureau, Mark J. Roberts, Department of Economics, the Pennsylvania State University and Daniel Yi Xu, Department of Economics, Duke University analyze Entry, exit, and the determinants of market structure.

ABSTRACT: This paper estimates a dynamic, structural model of entry and exit in an oligopolistic industry and uses it to quantify the determinants of market structure and long-run firm values for two U.S. service industries, dentists and chiropractors. Entry costs faced by potential entrants, fixed costs faced by incumbent producers, and the toughness of short-run price competition are all found to be important determinants of long-run firm values, firm turnover, and market structure. Estimates for the dentist industry allow the entry cost to differ for geographic markets that were designated as Health Professional Shortage Areas and in which entry was subsidized. The estimated mean entry cost is 11 percent lower in these markets. Using simulations, we compare entry-cost versus fixed-cost subsidies and find that entry-cost subsidies are less expensive per additional firm.

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