IDEAS home Printed from https://ideas.repec.org/p/ivi/wpasad/1998-21.html
   My bibliography  Save this paper

- A Difficulty With The Address Models Of Product Differentiation

Author

Listed:
  • Martin Peitz

    (Universidad de Alicante)

Abstract

In models of product differentiation and location models it is implicitly assumed that consumers can afford to buy the differentiated goods in the market. I show that with income heterogeneity there are severe existence problems of a price equilibrium in models of horizontal product differentiation with unit demand because some consumers are income-constrained. The result generalizes to other models of product differentiation, search, and switching costs. I present an alternative specification of variable individual demand in which this kind of existence problem cannot arise.

Suggested Citation

  • Martin Peitz, 1998. "- A Difficulty With The Address Models Of Product Differentiation," Working Papers. Serie AD 1998-21, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
    • Handle: RePEc:ivi:wpasad:1998-21
    as

    Download full text from publisher

    File URL: http://www.ivie.es/downloads/docs/wpasad/wpasad-1998-21.pdf
    File Function: Fisrt version / Primera version, 1998
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. Paul Klemperer, 1995. "Competition when Consumers have Switching Costs: An Overview with Applications to Industrial Organization, Macroeconomics, and International Trade," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 62(4), pages 515-539.
    2. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
    3. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
    4. d'Aspremont, C & Gabszewicz, Jean Jaskold & Thisse, J-F, 1979. "On Hotelling's "Stability in Competition"," Econometrica, Econometric Society, vol. 47(5), pages 1145-1150, September.
    5. Martin Peitz, 1998. "- Two-Stage Models Of Product Differentiation With Unit-Elastic Demand," Working Papers. Serie AD 1998-18, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
    6. Peitz, Martin, 1997. "Differentiated Bertrand duopoly with variable demand," Research in Economics, Elsevier, vol. 51(2), pages 85-100, June.
    7. Bockem, Sabine, 1994. "A Generalized Model of Horizontal Product Differentiation," Journal of Industrial Economics, Wiley Blackwell, vol. 42(3), pages 287-298, September.
    8. Caplin, Andrew & Nalebuff, Barry, 1991. "Aggregation and Imperfect Competition: On the Existence of Equilibrium," Econometrica, Econometric Society, vol. 59(1), pages 25-59, January.
    9. Jaskold Gabszewicz, J. & Thisse, J. -F., 1979. "Price competition, quality and income disparities," Journal of Economic Theory, Elsevier, vol. 20(3), pages 340-359, June.
    10. Beath,John & Katsoulacos,Yannis, 1991. "The Economic Theory of Product Differentiation," Cambridge Books, Cambridge University Press, number 9780521335263, September.
    11. ANDERSON, Simon P. & de PALMA, André & THISSE, Jacques-François, 1992. "Interpretations of the logit discrete choice models and the theory of product differentiation," LIDAM Reprints CORE 1017, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    12. Cremer, Helmuth & Thisse, Jacques-Francois, 1991. "Location Models of Horizontal Differentiation: A Special Case of Vertical Differentiation Models," Journal of Industrial Economics, Wiley Blackwell, vol. 39(4), pages 383-390, June.
    13. Economides, Nicholas, 1989. "Symmetric equilibrium existence and optimality in differentiated product markets," Journal of Economic Theory, Elsevier, vol. 47(1), pages 178-194, February.
    14. Economides, Nicholas, 1984. "The principle of minimum differentiation revisited," European Economic Review, Elsevier, vol. 24(3), pages 345-368, April.
    15. Peitz, Martin, 1995. "Utility maximization in models of discrete choice," Economics Letters, Elsevier, vol. 49(1), pages 91-94, July.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Pia Weiß, 2001. "Product and Process Innovations in a Horizontally Differentiated Product Market," IWP Discussion Paper Series 07/2001, Institute for Economic Policy, Cologne, Germany.
    2. Peitz, Martin, 2000. "Aggregation in a Model of Price Competition," Journal of Economic Theory, Elsevier, vol. 90(1), pages 1-38, January.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Belleflamme,Paul & Peitz,Martin, 2015. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9781107687899.
    2. Auer, Raphael A. & Sauré, Philip, 2017. "Dynamic entry in vertically differentiated markets," Journal of Economic Theory, Elsevier, vol. 167(C), pages 177-205.
    3. S. Baranzoni & P. Bianchi & L. Lambertini, 2000. "Multiproduct Firms, Product Differentiation, and Market Structure," Working Papers 368, Dipartimento Scienze Economiche, Universita' di Bologna.
    4. Ralph Siebert, 2003. "The Introduction of New Product Qualities by Incumbent Firms: Market Proliferation versus Cannibalization," CIG Working Papers SP II 2003-11, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
    5. Martin Peitz, 1998. "- Consumer Heterogeneity And Market Imperfections," Working Papers. Serie AD 1998-16, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
    6. Manez, J.A. & Waterson, M., 2001. "Multiproduct Firms and Product Differentiation: a Survey," The Warwick Economics Research Paper Series (TWERPS) 594, University of Warwick, Department of Economics.
    7. Ansari, A. & Economides, N. & Steckel, J., 1996. "The Max-Min-Min Principle of product Differentiation," Working Papers 96-10, New York University, Leonard N. Stern School of Business, Department of Economics.
    8. Nicholas Economides & Joel Steckel, "undated". "The Max-Min Principle of Product Differentiation," Networks, Compatibility 94-16, Economics of Networks.
    9. Janko Hernández Cortés & Paolo Morganti, 2022. "Existence and uniqueness of price equilibria in location-based models of differentiation with full coverage," Journal of Economics, Springer, vol. 136(2), pages 115-148, July.
    10. Caplin, Andrew & Nalebuff, Barry, 1991. "Aggregation and Imperfect Competition: On the Existence of Equilibrium," Econometrica, Econometric Society, vol. 59(1), pages 25-59, January.
    11. Gu Yiquan & Wenzel Tobias, 2012. "Price-Dependent Demand in Spatial Models," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 12(1), pages 1-26, March.
    12. Anderson, Simon P. & Gabszewicz, Jean J., 2006. "The Media and Advertising: A Tale of Two-Sided Markets," Handbook of the Economics of Art and Culture, in: V.A. Ginsburgh & D. Throsby (ed.), Handbook of the Economics of Art and Culture, edition 1, volume 1, chapter 18, pages 567-614, Elsevier.
    13. Ralph M. Braid, 2016. "Potential merger-forcing entry reduces maximum spacing between firms in spatial competition," Papers in Regional Science, Wiley Blackwell, vol. 95(3), pages 653-669, August.
    14. Ushchev, Philip & Zenou, Yves, 2018. "Price competition in product variety networks," Games and Economic Behavior, Elsevier, vol. 110(C), pages 226-247.
    15. Elizalde, Javier, 2013. "Competition in multiple characteristics: An empirical test of location equilibrium," Regional Science and Urban Economics, Elsevier, vol. 43(6), pages 938-950.
    16. Christou, C. & Vettas, N., 2008. "On informative advertising and product differentiation," International Journal of Industrial Organization, Elsevier, vol. 26(1), pages 92-112, January.
    17. Qiang Gong & Qihong Liu & Yi Zhang, 2016. "Optimal product differentiation in a circular model," Journal of Economics, Springer, vol. 119(3), pages 219-252, November.
    18. Ashiya, M., 1999. "Brand Proliferation is Useless to Deter Entry," ISER Discussion Paper 0476, Institute of Social and Economic Research, Osaka University.
    19. Emanuele Bacchiega & Elias Carroni & Alessandro Fedele, 2023. "Monopolistic Duopoly," BEMPS - Bozen Economics & Management Paper Series BEMPS101, Faculty of Economics and Management at the Free University of Bozen.
    20. Dragone, Davide & Lambertini, Luca, 2020. "Equilibrium existence in the Hotelling model with convex production costs," Regional Science and Urban Economics, Elsevier, vol. 84(C).

    More about this item

    Keywords

    product differentiation; unit demand; heterogenous income;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ivi:wpasad:1998-21. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Departamento de Edición (email available below). General contact details of provider: https://edirc.repec.org/data/ievages.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.