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Entry, exit, and imperfect competition in the long run

  • Amir, Rabah
  • Lambson, Val E.

An infinite-horizon, stochastic model of entry and exit with sunk costs and imperfect competition is constructed. Simple examples provide insights into: (1) the relationship between sunk costs and industry concentration, (2) entry when current profits are negative, and (3) the relationship between entry and the length of the product cycle. A subgame perfect Nash equilibrium for the general dynamic stochastic game is shown to exist as a limit of finite-horizon equilibria. This equilibrium has a relatively simple structure characterized by two numbers per finite history. Under very general conditions, it tends to exhibit excessive entry and insufficient exit relative to a social optimum.

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Article provided by Elsevier in its journal Journal of Economic Theory.

Volume (Year): 110 (2003)
Issue (Month): 1 (May)
Pages: 191-203

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Handle: RePEc:eee:jetheo:v:110:y:2003:i:1:p:191-203
Contact details of provider: Web page: http://www.elsevier.com/locate/inca/622869

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  1. Dixit, Avinash K, 1989. "Entry and Exit Decisions under Uncertainty," Journal of Political Economy, University of Chicago Press, vol. 97(3), pages 620-38, June.
  2. Tsutsui, Shunichi & Mino, Kazuo, 1990. "Nonlinear strategies in dynamic duopolistic competition with sticky prices," Journal of Economic Theory, Elsevier, vol. 52(1), pages 136-161, October.
  3. Klepper, Steven, 1996. "Entry, Exit, Growth, and Innovation over the Product Life Cycle," American Economic Review, American Economic Association, vol. 86(3), pages 562-83, June.
  4. Rafael Rob, 1991. "Learning and Capacity Expansion under Demand Uncertainty," Review of Economic Studies, Oxford University Press, vol. 58(4), pages 655-675.
  5. Jovanovic, Boyan, 1982. "Selection and the Evolution of Industry," Econometrica, Econometric Society, vol. 50(3), pages 649-70, May.
  6. AMIRÂ , Rabah, 1995. "Continuous Stochastic Games of Capital Accumulation with Convex Transition," CORE Discussion Papers 1995009, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  7. AMIR, Rabah & LAMBSON, Val, 1999. "On the effects of entry in Cournot markets," CORE Discussion Papers 1999059, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  8. Rabah Amir & Val E. Lambson, 2000. "On the Effects of Entry in Cournot Markets," Review of Economic Studies, Oxford University Press, vol. 67(2), pages 235-254.
  9. Dewey, Donald, 1976. "Industrial Concentration and the Rate of Profit: Some Neglected Theory," Journal of Law and Economics, University of Chicago Press, vol. 19(1), pages 67-78, April.
  10. 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.
  11. Drew Fudenberg & Jean Tirole, 1991. "Game Theory," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262061414, June.
  12. David Levhari & Leonard J. Mirman, 1980. "The Great Fish War: An Example Using a Dynamic Cournot-Nash Solution," Bell Journal of Economics, The RAND Corporation, vol. 11(1), pages 322-334, Spring.
  13. Lambson, Val Eugene, 1987. "Is the Concentration-Profit Correlation Partly an Artifact of Lumpy Technology?," American Economic Review, American Economic Association, vol. 77(4), pages 731-33, September.
  14. B. Douglas Bernheim, 1984. "Strategic Deterrence of Sequential Entry into an Industry," RAND Journal of Economics, The RAND Corporation, vol. 15(1), pages 1-11, Spring.
  15. La Manna, Manfredi M. A., 1986. "Why are profits correlated with concentration?," Economics Letters, Elsevier, vol. 22(1), pages 81-85.
  16. repec:att:wimass:8904 is not listed on IDEAS
  17. Fudenberg, Drew & Tirole, Jean, 1987. "Understanding Rent Dissipation: On the Use of Game Theory in Industrial Organization," American Economic Review, American Economic Association, vol. 77(2), pages 176-83, May.
  18. Val Eugene Lambson, 1992. "Competitive Profits in the Long Run," Review of Economic Studies, Oxford University Press, vol. 59(1), pages 125-142.
  19. Richard Ericson & Ariel Pakes, 1995. "Markov-Perfect Industry Dynamics: A Framework for Empirical Work," Review of Economic Studies, Oxford University Press, vol. 62(1), pages 53-82.
  20. Hopenhayn, Hugo A, 1992. "Entry, Exit, and Firm Dynamics in Long Run Equilibrium," Econometrica, Econometric Society, vol. 60(5), pages 1127-50, September.
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