Free entry does not imply zero profits
Traditional economic wisdom says that free entry in a market will drive profits down to zero. This conclusion is usually drawn under the assumption of perfect information. We assume that a priori there exists imperfect information about the profitability of the market, but that potential entrants may learn the demand curve perfectly at negligible cost by engaging in market research. Even if in equilibrium firms learn the demand perfectly, profits may be strictly positive because of insufficient entry. The mere fact that it will not become common knowledge that every entrant has perfect information about demand causes this surprising result. Belief means doubt. Knowing means certainty. Introduction to the Kabalah.
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- Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
- David Kreps & Robert Wilson, 1998.
Levine's Working Paper Archive
237, David K. Levine.
- Boyan Jovanovic, 1981. "Entry With Private Information," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 649-660, Autumn.
- Dixit, Avinash K & Stiglitz, Joseph E, 1977.
"Monopolistic Competition and Optimum Product Diversity,"
American Economic Review,
American Economic Association, vol. 67(3), pages 297-308, June.
- Dixit, Avinash K & Stiglitz, Joseph E, 1975. "Monopolistic Competition and Optimum Product Diversity," The Warwick Economics Research Paper Series (TWERPS) 64, University of Warwick, Department of Economics.
- Timothy F. Bresnahan & Peter C. Reiss, 1987. "Do Entry Conditions Vary across Markets?," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3), pages 833-882.
- Rafael Rob, 1991. "Learning and Capacity Expansion under Demand Uncertainty," Review of Economic Studies, Oxford University Press, vol. 58(4), pages 655-675.
- N. Gregory Mankiw & Michael D. Whinston, 1986. "Free Entry and Social Inefficiency," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 48-58, Spring.
- Vives, Xavier, 1988. "Aggregation of Information in Large Cournot Markets," Econometrica, Econometric Society, vol. 56(4), pages 851-76, July.
- Posner, Richard A, 1975. "The Social Costs of Monopoly and Regulation," Journal of Political Economy, University of Chicago Press, vol. 83(4), pages 807-27, August.
- Milgrom, Paul & Roberts, John, 1982.
"Limit Pricing and Entry under Incomplete Information: An Equilibrium Analysis,"
Econometric Society, vol. 50(2), pages 443-59, March.
- Paul Milgrom & John Roberts, 1998. "Limit Pricing and Entry Under Incomplete Information: An Equilibrium Analysis," Levine's Working Paper Archive 245, David K. Levine.
- Sjaak Hurkens & Nir Vulkan, 1996.
"Information acquisition and entry,"
Economics Working Papers
155, Department of Economics and Business, Universitat Pompeu Fabra.
- Hwang Hae-shin, 1993. "Optimal Information Acquisition for Heterogenous Duopoly Firms," Journal of Economic Theory, Elsevier, vol. 59(2), pages 385-402, April.
- Bresnahan, Timothy F & Reiss, Peter C, 1991.
"Entry and Competition in Concentrated Markets,"
Journal of Political Economy,
University of Chicago Press, vol. 99(5), pages 977-1009, October.
- In-Koo Cho & David M. Kreps, 1997.
"Signaling Games and Stable Equilibria,"
Levine's Working Paper Archive
896, David K. Levine.
- Avner Shaked & John Sutton, 1982. "Relaxing Price Competition Through Product Differentiation," Review of Economic Studies, Oxford University Press, vol. 49(1), pages 3-13.
- Harold Demsetz, 1981.
"Barriers to Entry,"
UCLA Economics Working Papers
192, UCLA Department of Economics.
- Timothy F. Bresnahan & Peter C. Reiss, 1990. "Entry in Monopoly Market," Review of Economic Studies, Oxford University Press, vol. 57(4), pages 531-553.
- Aghion, Philippe & Bolton, Patrick, 1987. "Contracts as a Barrier to Entry," American Economic Review, American Economic Association, vol. 77(3), pages 388-401, June.
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