IDEAS home Printed from https://ideas.repec.org/p/swe/wpaper/2008-01.html
   My bibliography  Save this paper

Measuring the Welfare Effect of Entry in Differentiated Product Markets: The Case of Medicare HMOs

Author

Listed:
  • Shiko Maruyama

    (School of Economics, The University of New South Wales)

Abstract

Should governments subsidize entry to promote competition? In general, theory models cannot determine whether entry under the free-entry condition is socially excessive, optimal, or insufficient. In this paper I propose an empirical framework to evaluate welfare consequences of policy intervention through entry in differentiated product markets, with a case study of the US Medicare HMO market. In endogenizing firms' entry-exit decision, a technical breakthrough is to explicitly incorporate firm heterogeneity by employing a sequential move game. This enables us to exploit detailed firm level data and makes policy simulations relevant. I find no evidence of socially excessive entry. The government may achieve higher social welfare by expanding the program.

Suggested Citation

  • Shiko Maruyama, 2008. "Measuring the Welfare Effect of Entry in Differentiated Product Markets: The Case of Medicare HMOs," Discussion Papers 2008-01, School of Economics, The University of New South Wales.
  • Handle: RePEc:swe:wpaper:2008-01
    as

    Download full text from publisher

    File URL: http://wwwdocs.fce.unsw.edu.au/economics/Research/WorkingPapers/2008_01.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Michael Spence, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 43(2), pages 217-235.
    2. Nevo, Aviv, 2001. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Econometrica, Econometric Society, vol. 69(2), pages 307-342, March.
    3. Berry, Steven T, 1992. "Estimation of a Model of Entry in the Airline Industry," Econometrica, Econometric Society, vol. 60(4), pages 889-917, July.
    4. Patrick Bajari & Han Hong & Stephen P. Ryan, 2010. "Identification and Estimation of a Discrete Game of Complete Information," Econometrica, Econometric Society, vol. 78(5), pages 1529-1568, September.
    5. Paul Contoyannis & Andrew M. Jones & Roberto Leon‐Gonzalez, 2004. "Using simulation‐based inference with panel data in health economics," Health Economics, John Wiley & Sons, Ltd., vol. 13(2), pages 101-122, February.
    6. Steven T. Berry, 1994. "Estimating Discrete-Choice Models of Product Differentiation," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 242-262, Summer.
    7. Federico Ciliberto & Elie Tamer, 2009. "Market Structure and Multiple Equilibria in Airline Markets," Econometrica, Econometric Society, vol. 77(6), pages 1791-1828, November.
    8. Leemore Dafny & David Dranove, 2008. "Do report cards tell consumers anything they don't already know? The case of Medicare HMOs," RAND Journal of Economics, RAND Corporation, vol. 39(3), pages 790-821, September.
    9. Town, Robert & Liu, Su, 2003. "The Welfare Impact of Medicare HMOs," RAND Journal of Economics, The RAND Corporation, vol. 34(4), pages 719-736, Winter.
    10. repec:mpr:mprres:3849 is not listed on IDEAS
    11. Steven T. Berry & Joel Waldfogel, 1999. "Free Entry and Social Inefficiency in Radio Broadcasting," RAND Journal of Economics, The RAND Corporation, vol. 30(3), pages 397-420, Autumn.
    12. Michael J. Mazzeo, 2002. "Product Choice and Oligopoly Market Structure," RAND Journal of Economics, The RAND Corporation, vol. 33(2), pages 221-242, Summer.
    13. N. Gregory Mankiw & Michael D. Whinston, 1986. "Free Entry and Social Inefficiency," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 48-58, Spring.
    14. Timothy F. Bresnahan & Peter C. Reiss, 1987. "Do Entry Conditions Vary across Markets?," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3, Specia), pages 833-882.
    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. Shiko Maruyama, 2009. "Estimating Sequential-move Games by a Recursive Conditioning Simulator," Discussion Papers 2009-01, School of Economics, The University of New South Wales.

    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. Shiko Maruyama, 2006. "Welfare Analysis Incorporating a Structural Entry-Exit Model: A Case Study of Medicare HMOs," Hi-Stat Discussion Paper Series d06-166, Institute of Economic Research, Hitotsubashi University.
    2. Steven Berry & Alon Eizenberg & Joel Waldfogel, 2016. "Optimal product variety in radio markets," RAND Journal of Economics, RAND Corporation, vol. 47(3), pages 463-497, August.
    3. Liu, An-Hsiang & Siebert, Ralph B., 2022. "The competitive effects of declining entry costs over time: Evidence from the static random access memory market," International Journal of Industrial Organization, Elsevier, vol. 80(C).
    4. Steven Berry & Alon Eizenberg & Joel Waldfogel, 2016. "Fixed Costs and the Product Market Treatment of Preference Minorities," Journal of Industrial Economics, Wiley Blackwell, vol. 64(3), pages 466-493, September.
    5. Nishida, Mitsukuni & Gil, Ricard, 2014. "Regulation, enforcement, and entry: Evidence from the Spanish local TV industry," International Journal of Industrial Organization, Elsevier, vol. 32(C), pages 11-23.
    6. An-Hsiang Liu & Ralph Siebert, 2020. "The Competitive Effects of Declining Entry Costs over Time: Evidence from the Static Random Access Memory Market," CESifo Working Paper Series 8552, CESifo.
    7. Jeremy T. Fox, 2018. "Estimating matching games with transfers," Quantitative Economics, Econometric Society, vol. 9(1), pages 1-38, March.
    8. Catherine Schaumans & Frank Verboven, 2008. "Entry and regulation: evidence from health care professions," RAND Journal of Economics, RAND Corporation, vol. 39(4), pages 949-972, December.
    9. Hector Perez-Saiz, 2015. "Building new plants or entering by acquisition? Firm heterogeneity and entry barriers in the U.S. cement industry," RAND Journal of Economics, RAND Corporation, vol. 46(3), pages 625-649, September.
    10. Belleflamme,Paul & Peitz,Martin, 2015. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9781107687899.
    11. Michaela Draganska & Sanjog Misra & Victor Aguirregabiria & Pat Bajari & Liran Einav & Paul Ellickson & Dan Horsky & Sridhar Narayanan & Yesim Orhun & Peter Reiss & Katja Seim & Vishal Singh & Raphael, 2008. "Discrete choice models of firms’ strategic decisions," Marketing Letters, Springer, vol. 19(3), pages 399-416, December.
    12. Federico Ciliberto & Elie Tamer, 2009. "Market Structure and Multiple Equilibria in Airline Markets," Econometrica, Econometric Society, vol. 77(6), pages 1791-1828, November.
    13. Mitsukuni Nishida, 2015. "Estimating a Model of Strategic Network Choice: The Convenience-Store Industry in Okinawa," Marketing Science, INFORMS, vol. 34(1), pages 20-38, January.
    14. Liran Einav (Stanford University), 2004. "Not All Rivals Look Alike: An Empirical Model for Discrete Games with Asymmetric Rivals," Econometric Society 2004 North American Winter Meetings 626, Econometric Society.
    15. Ho, Kate & Rosen, Adam M., 2015. "Partial Identification in Applied Research: Benefits and Challenges," CEPR Discussion Papers 10883, C.E.P.R. Discussion Papers.
    16. Catherine Schaumans & Frank Verboven, 2015. "Entry and Competition in Differentiated Products Markets," The Review of Economics and Statistics, MIT Press, vol. 97(1), pages 195-209, March.
    17. Jean Marie Abraham & Martin Gaynor & William B. Vogt, 2007. "Entry And Competition In Local Hospital Markets," Journal of Industrial Economics, Wiley Blackwell, vol. 55(2), pages 265-288, June.
    18. Steven Berry & Martin Gaynor & Fiona Scott Morton, 2019. "Do Increasing Markups Matter? Lessons from Empirical Industrial Organization," Journal of Economic Perspectives, American Economic Association, vol. 33(3), pages 44-68, Summer.
    19. Katja Seim & Joel Waldfogel, 2013. "Public Monopoly and Economic Efficiency: Evidence from the Pennsylvania Liquor Control Board's Entry Decisions," American Economic Review, American Economic Association, vol. 103(2), pages 831-862, April.
    20. Ciliberto, Federico & Williams, Jonathan, 2010. "Does Multimarket Contact Facilitate Tacit Collusion? Inference on Conjectural Parameters in the Airline Industry," MPRA Paper 24888, University Library of Munich, Germany.

    More about this item

    NEP fields

    This paper has been announced in the following NEP Reports:

    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:swe:wpaper:2008-01. 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: Hongyi Li (email available below). General contact details of provider: https://edirc.repec.org/data/senswau.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.