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Entry, Exit, and Imperfect Competition in the Long Run

  • Rabah Amir

    (CORE)

  • Val E. Lambson

    (Brigham Young University, Provo)

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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File URL: http://www.econ.ku.dk/cie/dp/dp_2003-2006/2003-03.pdf/
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Paper provided by University of Copenhagen. Department of Economics. Centre for Industrial Economics in its series CIE Discussion Papers with number 2003-03.

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Length: 31 pages
Date of creation: Sep 2003
Date of revision:
Handle: RePEc:kud:kuieci:2003-03
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  1. Dixit, A., 1988. "Entry And Exit Decisions Under Uncertainty," Papers 91, Princeton, Department of Economics - Financial Research Center.
  2. AMIR , 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).
  3. 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.
  4. 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.
  5. Drew Fudenberg & Jean Tirole, 1991. "Game Theory," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262061414, March.
  6. Jovanovic, Boyan, 1982. "Selection and the Evolution of Industry," Econometrica, Econometric Society, vol. 50(3), pages 649-70, May.
  7. 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.
  8. Hopenhayn, Hugo A, 1992. "Entry, Exit, and Firm Dynamics in Long Run Equilibrium," Econometrica, Econometric Society, vol. 60(5), pages 1127-50, September.
  9. Val Eugene Lambson, 1992. "Competitive Profits in the Long Run," Review of Economic Studies, Oxford University Press, vol. 59(1), pages 125-142.
  10. Rabah Amir & Val E. Lambson, 1998. "On the Effects of Entry in Cournot Markets," CIE Discussion Papers 1998-06, University of Copenhagen. Department of Economics. Centre for Industrial Economics.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. Lambson, V.E., 1989. "Industry Evolution With Sunk Costs And Uncertian Market Conditions," Working papers 8904, Wisconsin Madison - Social Systems.
  16. La Manna, Manfredi M. A., 1986. "Why are profits correlated with concentration?," Economics Letters, Elsevier, vol. 22(1), pages 81-85.
  17. 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.
  18. 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.
  19. Rafael Rob, 1991. "Learning and Capacity Expansion under Demand Uncertainty," Review of Economic Studies, Oxford University Press, vol. 58(4), pages 655-675.
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