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Entry Decisions in the Generic Pharmaceutical Industry


  • Fiona M. Scott Morton


Data on all generic drug entries in the period 1984-1994 are used to estimate which markets heterogeneous potential entrants will decide to enter. I find that organizational experience predicts entry. Firms tend to enter markets with supply and demand characteristics similar to the firm's existing drugs. Larger revenue markets, markets with more hospital sales, and products that treat chronic conditions attract more entry. The simultaneous nature of entry leads to an additional interpretation: specialization is profitable because of the severe risk to profits when a market is "overentered." However, I am unable to make any conclusions about the efficiency of entry decisions.

Suggested Citation

  • Fiona M. Scott Morton, 1999. "Entry Decisions in the Generic Pharmaceutical Industry," RAND Journal of Economics, The RAND Corporation, vol. 30(3), pages 421-440, Autumn.
  • Handle: RePEc:rje:randje:v:30:y:1999:i:autumn:p:421-440

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    References listed on IDEAS

    1. Michael Spence, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," Review of Economic Studies, Oxford University Press, vol. 43(2), pages 217-235.
    2. David Dranove & Mark Shanley & Carol Simon, 1992. "Is Hospital Competition Wasteful?," RAND Journal of Economics, The RAND Corporation, vol. 23(2), pages 247-262, Summer.
    3. 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.
    4. Berry, Steven T, 1992. "Estimation of a Model of Entry in the Airline Industry," Econometrica, Econometric Society, vol. 60(4), pages 889-917, July.
    5. Anderson, Simon P & de Palma, Andre & Nesterov, Yurii, 1995. "Oligopolistic Competition and the Optimal Provision of Products," Econometrica, Econometric Society, vol. 63(6), pages 1281-1301, November.
    6. Daniel McFadden, 1977. "Modelling the Choice of Residential Location," Cowles Foundation Discussion Papers 477, Cowles Foundation for Research in Economics, Yale University.
    7. Spence, Michael, 1976. "Product Differentiation and Welfare," American Economic Review, American Economic Association, vol. 66(2), pages 407-414, May.
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    Cited by:

    1. Liu, Ya-Ming & Cheng, Jur-Shan, 2012. "Determinants of generic entry in the regulated Taiwanese prescription drug market," Health Policy, Elsevier, vol. 108(2), pages 228-235.
    2. Arvate, Paulo Roberto & Barbosa, Klênio & Gambardella, Dante, 2013. "Generic-branded drug competition and the price for pharmaceuticals in procurement auctions," Textos para discussão 333, FGV/EESP - Escola de Economia de São Paulo, Getulio Vargas Foundation (Brazil).
    3. Quint, Daniel & Einav, Liran, 2005. "Efficient entry," Economics Letters, Elsevier, vol. 88(2), pages 278-283, August.
    4. Teece, David J., 2006. "Reflections on "Profiting from Innovation"," Research Policy, Elsevier, vol. 35(8), pages 1131-1146, October.
    5. Ying Fan & Xiao Mo, 2010. "Estimating the Option Value of Waiting: A Dynamic Entry Game of the U.S. Local Telephone Competition," Working Papers 10-14, NET Institute.
    6. James W. Hughes & Michael J. Moore & Edward A. Snyder, 2002. ""Napsterizing" Pharmaceuticals: Access, Innovation, and Consumer Welfare," NBER Working Papers 9229, National Bureau of Economic Research, Inc.
    7. Arcidiacono, Peter & Ellickson, Paul B. & Landry, Peter & Ridley, David B., 2013. "Pharmaceutical followers," International Journal of Industrial Organization, Elsevier, vol. 31(5), pages 538-553.
    8. Regan, Tracy L., 2008. "Generic entry, price competition, and market segmentation in the prescription drug market," International Journal of Industrial Organization, Elsevier, vol. 26(4), pages 930-948, July.
    9. Ching, Andrew T., 2010. "Consumer learning and heterogeneity: Dynamics of demand for prescription drugs after patent expiration," International Journal of Industrial Organization, Elsevier, vol. 28(6), pages 619-638, November.
    10. Kitamura, Hiroshi & Miyaoka, Akira & Sato, Misato, 2013. "Free entry, market diffusion, and social inefficiency with endogenously growing demand," Journal of the Japanese and International Economies, Elsevier, vol. 29(C), pages 98-116.
    11. Miraldo, Marisa, 2009. "Reference pricing and firms' pricing strategies," Journal of Health Economics, Elsevier, vol. 28(1), pages 176-197, January.

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