Product variety, price elasticity of demand and fixed cost in spatial models
This paper explores the implications of price-dependent demand in spatial models of product differentiation. We introduce consumers with a quasi-linear utility function in the framework of the Salop (1979) model. We show that the so-called excess entry theorem relies critically on the assumption of completely inelastic demand. Our model is able to produce excessive, insufficient, or optimal product variety. A proof for the existence and uniqueness of symmetric equilibrium when price elasticity of demand is increasing in price is also provided.
|Date of creation:||2009|
|Date of revision:|
|Contact details of provider:|| Web page: http://www.iwqw.rw.uni-erlangen.de/|
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- James W. Friedman & Jacques-Francois Thisse, 1993. "Partial Collusion Fosters Minimum Product Differentiation," RAND Journal of Economics, The RAND Corporation, vol. 24(4), pages 631-645, Winter.
- Matsumura, Toshihiro & Okamura, Makoto, 2006. "A note on the excess entry theorem in spatial markets," International Journal of Industrial Organization, Elsevier, vol. 24(5), pages 1071-1076, September.
- Martin A. Lariviere & Evan L. Porteus, 2001. "Selling to the Newsvendor: An Analysis of Price-Only Contracts," Manufacturing & Service Operations Management, INFORMS, vol. 3(4), pages 293-305, May.
- Gu, Yiquan & Wenzel, Tobias, 2009.
"A note on the excess entry theorem in spatial models with elastic demand,"
International Journal of Industrial Organization,
Elsevier, vol. 27(5), pages 567-571, September.
- Gu, Yiquan & Wenzel, Tobias, 2007. "A Note on the Excess Entry Theorem in Spatial Models with Elastic Demand," Ruhr Economic Papers 33, Rheinisch-Westfälisches Institut für Wirtschaftsforschung (RWI), Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen.
- Economides, Nicholas, 1989. "Symmetric equilibrium existence and optimality in differentiated product markets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 178-194, February.
- Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
- 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.
- Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, June.
- Anderson, Simon P. & de Palma, Andre, 2000.
"From local to global competition,"
European Economic Review,
Elsevier, vol. 44(3), pages 423-448, March.
- S. P. Anderson & A. de Palma, 1997. "From local to global competition," THEMA Working Papers 97-10, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
- Anderson, Simon P & de Palma, André, 1996. "From Local to Global Competition," CEPR Discussion Papers 1328, C.E.P.R. Discussion Papers.
- Simon P. Anderson & Andre de Palma, 1998. "From Local to Global Competition," Virginia Economics Online Papers 344, University of Virginia, Department of Economics.
- Simon P. Anderson & Stephen Coate, 2005.
"Market Provision of Broadcasting: A Welfare Analysis,"
Review of Economic Studies,
Oxford University Press, vol. 72(4), pages 947-972.
- Simon P. Anderson & Stephen Coate, 2003. "Market Provision of Broadcasting: A Welfare Analysis," Virginia Economics Online Papers 358, University of Virginia, Department of Economics.
- Rath, Kali P. & Zhao, Gongyun, 2001. "Two stage equilibrium and product choice with elastic demand," International Journal of Industrial Organization, Elsevier, vol. 19(9), pages 1441-1455, November.
When requesting a correction, please mention this item's handle: RePEc:zbw:iwqwdp:032009. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (ZBW - German National Library of Economics)
If references are entirely missing, you can add them using this form.