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Dynamic product diversity

  • Ramon Caminal

    ()

The goal of this paper is to study the frequency of new product introductions in monopoly markets where demand is subject to transitory saturation. We focus on those types of goods for which consumers purchase at most one unit of each variety, but repeat purchases in the same product category. The model considers infinitely-lived, forward-looking consumers and firms. We show that the share of potential surplus that a monopolist is able to appropriate increases with the frequency of introduction of new products and the intensity of transitory saturation. If the latter is sufficiently strong then the rate of introduction of new products is higher than socially desirable (excessive dynamic product diversity.)

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Paper provided by Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC) in its series UFAE and IAE Working Papers with number 891.11.

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Length: 31
Date of creation: 12 Dec 2011
Date of revision:
Handle: RePEc:aub:autbar:891.11
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  1. Jerome Adda & Russell Cooper, 1997. "Balladurette and Juppette: A Discrete Analysis of Scrapping Subsidies," NBER Working Papers 6048, National Bureau of Economic Research, Inc.
  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. Waldman, Michael, 1993. "A New Perspective on Planned Obsolescence," The Quarterly Journal of Economics, MIT Press, vol. 108(1), pages 273-83, February.
  4. Arthur Fishman & Rafael Rob, 2000. "Product Innovation by a Durable-Good Monpoly," RAND Journal of Economics, The RAND Corporation, vol. 31(2), pages 237-252, Summer.
  5. Choi, J.P., 1991. "Network Externality, Compatibility Choice, and Planned Obsolescence," Discussion Papers 1991_67, Columbia University, Department of Economics.
  6. Yongmin Chen & Michael H. Riordan, 2007. "Price and Variety in the Spokes Model," Economic Journal, Royal Economic Society, vol. 117(522), pages 897-921, 07.
  7. Eric W. Bond & Larry Samuelson, 1984. "Durable Good Monopolies with Rational Expectations and Replacement Sales," RAND Journal of Economics, The RAND Corporation, vol. 15(3), pages 336-345, Autumn.
  8. Kenneth S. Corts, 2001. "The Strategic Effects of Vertical Market Structure: Common Agency and Divisionalization in the US Motion Picture Industry," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 10(4), pages 509-528, December.
  9. de Meza, David & Ungern-Sternberg, Thomas von, 1982. "Monopoly, product diversity and welfare," Regional Science and Urban Economics, Elsevier, vol. 12(3), pages 313-324, August.
  10. Armstrong, Mark, 2006. "Price discrimination," MPRA Paper 4693, University Library of Munich, Germany.
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