On the existence of spatial monopolies under free entry
In a model of horizontal product differentiation, we show that local monopolies may exist under free entry when capital is perfectly mobile. In contrast both with the situation of restricted entry and with the zero-profit approach to free entry outcomes of Salop (1979), the unit profit rate of incumbent monopolists is positive and bounded above in equilibrium. The upper bound we find decreases with the size of unserved market areas and with the number of incumbent monopolists.
|Date of creation:||01 Jan 1999|
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- Economides, Nicholas, 1989. "Symmetric equilibrium existence and optimality in differentiated product markets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 178-194, February.
- MacLeod, W.B. & Norman, G. & Thisse, J.-F., 1988.
"Price discrimination and equilibrium in monopolistic competition,"
International Journal of Industrial Organization,
Elsevier, vol. 6(4), pages 429-446.
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- Macleod, W.B. & Norman, G. & Thisse, J.-F., 1985. "Price discrimination and equilibrium in monopolistic competition," CORE Discussion Papers 1985006, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- W. B. MacLeod & G. Norman & J.F. Thisse, 1987. "Price Discrimination and Equilibrium in Monopolistic Competition," Working Papers 701, Queen's University, Department of Economics.
- Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
- Novshek, William, 1980. "Equilibrium in simple spatial (or differentiated product) models," Journal of Economic Theory, Elsevier, vol. 22(2), pages 313-326, April.
- Norman, George & Thisse, Jacques-Francois, 1996. "Product Variety and Welfare under Tough and Soft Pricing Regimes," Economic Journal, Royal Economic Society, vol. 106(434), pages 76-91, January.
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