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The multiproduct monopolist under vertical differentiation : An inductive approach

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  • Luca LAMBERTINI

    (Dipartimento di Scienze Economiche, Università degli Studi di Bologna)

Abstract

An inductive procedure is adopted to evaluate the behaviour of a multiproduct profit seeking monopolist vis à vis that of a social planner, in a model where there is a continuum of consumers characterized by different marginal willingness to pay for the quality. When the market is completely covered, the monopolist undersupplies all qualities as long as their number is finite. When quality becomes continuous, the richest consumer is provided with the socially optimal quality. Under the alternative assumption of partial market coverage, the monopolist supplies the same qualities as the social planner, restricting though total output. Finally, it turns out that, for a given number of varieties, under partial market coverage the monopolist can make at least as good as under full market coverage, so that she prefers to distort quantity rather than quality.

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Paper provided by Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES) in its series Discussion Papers (REL - Recherches Economiques de Louvain) with number 1997021.

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Length: 13
Date of creation: 01 Jun 1997
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Handle: RePEc:ctl:louvre:1997021

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References

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  1. Bonanno, Giacomo, 1987. "Location Choice, Product Proliferation and Entry Deterrence," Review of Economic Studies, Wiley Blackwell, vol. 54(1), pages 37-45, January.
  2. Cremer, Helmuth & Thisse, Jacques-François, 1993. "Commodity Taxation in a Differentiated Oligopoly," IDEI Working Papers 25, Institut d'Économie Industrielle (IDEI), Toulouse.
  3. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
  4. Besanko, David & Donnenfeld, Shabtai & White, Lawrence J, 1987. "Monopoly and Quality Distortion: Effects and Remedies," The Quarterly Journal of Economics, MIT Press, vol. 102(4), pages 743-67, November.
  5. Sheshinski, Eytan, 1976. "Price, Quality and Quantity Regulation in Monopoly Situations," Economica, London School of Economics and Political Science, vol. 43(17), pages 127-37, May.
  6. Spence, Michael, 1976. "Product Differentiation and Welfare," American Economic Review, American Economic Association, vol. 66(2), pages 407-14, May.
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Cited by:
  1. Olivier Bonroy, 2006. "Le standard de qualité minimale est-il un instrument socialement optimal ?. Une revue de littérature," Revue économique, Presses de Sciences-Po, vol. 57(1), pages 35-53.
  2. L. Lambertini & R. Orsini, 1998. "Differentiation With A Positional Good," Working Papers 306, Dipartimento Scienze Economiche, Universita' di Bologna.
  3. Lambertini, Luca & Orsini, Raimondello, 2000. "Process and product innovation in a vertically differentiated monopoly," Economics Letters, Elsevier, vol. 68(3), pages 333-337, September.
  4. Luca Lambertini & Raimondello Orsini, 2005. "Positional effects, product quality and regulation in duopoly," Recherches économiques de Louvain, De Boeck Université, vol. 71(4), pages 367-381.
  5. Luca Lambertini & Piero Tedeschi, 2007. "Would You Like To Enter First With A Low-Quality Good?," Bulletin of Economic Research, Wiley Blackwell, vol. 59(3), pages 269-282, 07.

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