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Insurance market games: Scale effects and public policy

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  • Michael Powers
  • Martin Shubik
  • Shun Yao

Abstract

We propose a game-theoretic model to study various effects of scale in an insurance market. After reviewing a simple static model, we present a one-period game in which both the buyers and sellers of insurance make strategic bids, and show that, under reasonably broad conditions, market equilibrium exists. For a special case, we then consider how both the price and quantity of insurance, as well as other quantities of interest to public policy decision makers, are affected by the number of insurance firms, the number of customers, and the total amount of capital provided by investors.

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File URL: http://hdl.handle.net/10.1007/BF01236065
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Bibliographic Info

Article provided by Springer in its journal Journal of Economics Zeitschrift für Nationalökonomie.

Volume (Year): 67 (1998)
Issue (Month): 2 (June)
Pages: 109-134

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Handle: RePEc:kap:jeczfn:v:67:y:1998:i:2:p:109-134

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Web page: http://www.springerlink.com/link.asp?id=108909

Related research

Keywords: insurance market games; scale effects; public policy; C70; G22;

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References

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  1. J. David Cummins & Jack VanDerhei, 1979. "A Note on the Relative Efficiency of Property-Liability Insurance Distribution Systems," Bell Journal of Economics, The RAND Corporation, vol. 10(2), pages 709-719, Autumn.
  2. Powers, Michael R. & Shubik, Martin, 1998. "On the tradeoff between the law of large numbers and oligopoly in insurance," Insurance: Mathematics and Economics, Elsevier, vol. 23(2), pages 141-156, November.
  3. Michael Powers & Martin Shubik & Shun Yao, 1998. "Insurance market games: Scale effects and public policy," Journal of Economics, Springer, vol. 67(2), pages 109-134, June.
  4. Schlesinger, Harris, 1984. "Two-person insurance negotiation," Insurance: Mathematics and Economics, Elsevier, vol. 3(3), pages 147-149, July.
  5. Paul L. Joskow, 1973. "Cartels, Competition and Regulation in the Property-Liability Insurance Industry," Bell Journal of Economics, The RAND Corporation, vol. 4(2), pages 375-427, Autumn.
  6. Dubey, Pradeep & Shubik, Martin, 1978. "A theory of money and financial institutions. 28. The non-cooperative equilibria of a closed trading economy with market supply and bidding strategies," Journal of Economic Theory, Elsevier, vol. 17(1), pages 1-20, February.
  7. Cummins, J. David & Weiss, Mary A., 1993. "Measuring cost efficiency in the property-liability insurance industry," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 463-481, April.
  8. Sherrill Shaffer, 1989. "Pooling intensifies joint failure risk," Working Papers 89-1, Federal Reserve Bank of Philadelphia.
  9. Powers, Michael R., 1995. "A theory of risk, return and solvency," Insurance: Mathematics and Economics, Elsevier, vol. 17(2), pages 101-118, October.
  10. Kunreuther, Howard & Pauly, Mark, 1985. "Market equilibrium with private knowledge : An insurance example," Journal of Public Economics, Elsevier, vol. 26(3), pages 269-288, April.
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Citations

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Cited by:
  1. Michael R. Powers & Martin Shubik, 1999. "Toward a Theory of Reinsurance and Retrocession," Cowles Foundation Discussion Papers 1227, Cowles Foundation for Research in Economics, Yale University.
  2. Michael Powers & Martin Shubik & Shun Yao, 1998. "Insurance market games: Scale effects and public policy," Journal of Economics, Springer, vol. 67(2), pages 109-134, June.
  3. Timothy Falcon Crack & Olivier Ledoit, 2010. "Central limit theorems when data are dependent: addressing the pedagogical gaps," IEW - Working Papers 480, Institute for Empirical Research in Economics - University of Zurich.
  4. Powers, Michael R. & Shubik, Martin, 1998. "On the tradeoff between the law of large numbers and oligopoly in insurance," Insurance: Mathematics and Economics, Elsevier, vol. 23(2), pages 141-156, November.

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