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Interregional mixed duopoly


  • Inoue, Tomohiro
  • Kamijo, Yoshio
  • Tomaru, Yoshihiro


We investigate an interregional mixed duopoly wherein a local public firm competes against a private firm. We employ a spatial model with price competition. The public firm is owned by the local government of the left half of the linear city called Region 1, and maximizes its welfare. We demonstrate that our two-stage game comprising location choice and price competition has two types of equilibria. In one equilibrium (E1), the local public firm locates in Region 1, and the private firm locates outside the region. In the other equilibrium (E2), both firms are located in Region 1. We find that although the two firms are closely located in E2, E2 payoff-dominates E1. Moreover, E2 is robust in the sense that the sequential choice of location adopts this equilibrium, regardless of whether the public firm is a leader or a follower.

Suggested Citation

  • Inoue, Tomohiro & Kamijo, Yoshio & Tomaru, Yoshihiro, 2009. "Interregional mixed duopoly," Regional Science and Urban Economics, Elsevier, vol. 39(2), pages 233-242, March.
  • Handle: RePEc:eee:regeco:v:39:y:2009:i:2:p:233-242

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    References listed on IDEAS

    1. Juan Carlos Bárcena-Ruiz & María Begoña Garzón, 2005. "International Trade and Strategic Privatization," Review of Development Economics, Wiley Blackwell, vol. 9(4), pages 502-513, November.
    2. Hamilton, Jonathan H. & Slutsky, Steven M., 1990. "Endogenous timing in duopoly games: Stackelberg or cournot equilibria," Games and Economic Behavior, Elsevier, vol. 2(1), pages 29-46, March.
    3. Tharakan, Joe & Thisse, Jacques-Francois, 2002. "The importance of being small. Or when countries are areas and not points," Regional Science and Urban Economics, Elsevier, vol. 32(3), pages 381-408, May.
    4. Kenneth Fjell & Debashis Pal, 1996. "A Mixed Oligopoly in the Presence of Foreign Private Firms," Canadian Journal of Economics, Canadian Economics Association, vol. 29(3), pages 737-743, August.
    5. Cremer, Helmuth & Marchand, Maurice & Thisse, Jacques-Francois, 1991. "Mixed oligopoly with differentiated products," International Journal of Industrial Organization, Elsevier, vol. 9(1), pages 43-53, March.
    6. Matsushima, Noriaki, 2001. "Cournot competition and spatial agglomeration revisited," Economics Letters, Elsevier, vol. 73(2), pages 175-177, November.
    7. Toshihiro Matsumura & Noriaki Matsushima, 2003. "Mixed Duopoly with Product Differentiation: Sequential Choice of Location," Australian Economic Papers, Wiley Blackwell, vol. 42(1), pages 18-34, March.
    8. Ohsawa, Yoshiaki, 1999. "Cross-border shopping and commodity tax competition among governments," Regional Science and Urban Economics, Elsevier, vol. 29(1), pages 33-51, January.
    9. Matsumura, Toshihiro, 1998. "Partial privatization in mixed duopoly," Journal of Public Economics, Elsevier, vol. 70(3), pages 473-483, December.
    10. Pal, Debashis, 1998. "Does Cournot competition yield spatial agglomeration?," Economics Letters, Elsevier, vol. 60(1), pages 49-53, July.
    11. Toshihiro Matsumura & Noriaki Matsushima, 2004. "Endogenous Cost Differentials between Public and Private Enterprises: A Mixed Duopoly Approach," Economica, London School of Economics and Political Science, vol. 71(284), pages 671-688, November.
    12. Pal, Debashis, 1998. "Endogenous timing in a mixed oligopoly," Economics Letters, Elsevier, vol. 61(2), pages 181-185, November.
    13. Noriaki Matsushima & Toshihiro Matsumura, 2003. "Mixed oligopoly and spatial agglomeration," Canadian Journal of Economics, Canadian Economics Association, vol. 36(1), pages 62-87, February.
    14. Matsushima, Noriaki & Matsumura, Toshihiro, 2006. "Mixed oligopoly, foreign firms, and location choice," Regional Science and Urban Economics, Elsevier, vol. 36(6), pages 753-772, November.
    15. Debashis Pal & Mark D. White, 1998. "Mixed Oligopoly, Privatization, and Strategic Trade Policy," Southern Economic Journal, Southern Economic Association, vol. 65(2), pages 264-281, October.
    16. Toshihiro Matsumura & Takao Ohkawa & Daisuke Shimizu, 2005. "Partial Agglomeration or Dispersion in Spatial Cournot Competition," Southern Economic Journal, Southern Economic Association, vol. 72(1), pages 224-235, July.
    17. Juan Bárcena-Ruiz, 2007. "Endogenous Timing in a Mixed Duopoly: Price Competition," Journal of Economics, Springer, vol. 91(3), pages 263-272, July.
    18. Hikaru Ogawa & Yasuo Sanjo, 2007. "Location Of Public Firm In The Presence Of Multinational Firm: A Mixed Duopoly Approach ," Australian Economic Papers, Wiley Blackwell, vol. 46(2), pages 191-203, June.
    19. Barcena-Ruiz, Juan Carlos & Begona Garzon, Maria, 2005. "Economic integration and privatisation under diseconomies of scale," European Journal of Political Economy, Elsevier, vol. 21(1), pages 247-267, March.
    20. de Fraja, Giovanni & Delbono, Flavio, 1989. "Alternative Strategies of a Public Enterprise in Oligopoly," Oxford Economic Papers, Oxford University Press, vol. 41(2), pages 302-311, April.
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    Cited by:

    1. Wang, Leonard F.S. & Tomaru, Yoshihiro, 2015. "The feasibility of privatization and foreign penetration," International Review of Economics & Finance, Elsevier, vol. 39(C), pages 36-46.
    2. repec:bla:manchs:v:85:y:2017:i:3:p:339-356 is not listed on IDEAS
    3. Hiroshi Aiura & Yasuo Sanjo, 2010. "Privatization of local public hospitals: effect on budget, medical service quality, and social welfare," International Journal of Health Economics and Management, Springer, vol. 10(3), pages 275-299, September.
    4. Jie Shuai, 2017. "A comment on mixed oligopoly spatial model: the non-uniform consumer distribution," Economic Theory Bulletin, Springer;Society for the Advancement of Economic Theory (SAET), vol. 5(1), pages 57-63, April.
    5. Takeshi Ebina & Toshihiro Matsumura & Daisuke Shimizu, 2009. "Mixed oligopoly and spatial agglomeration in quasi-linear city," Economics Bulletin, AccessEcon, vol. 29(4), pages 2722-2729.
    6. Juan Bárcena-Ruiz & F. Casado-Izaga, 2012. "Location of public and private firms under endogenous timing of choices," Journal of Economics, Springer, vol. 105(2), pages 129-143, March.
    7. Ming Lin & Toshihiro Matsumura, 2012. "Presence of foreign investors in privatized firms and privatization policy," Journal of Economics, Springer, vol. 107(1), pages 71-80, September.
    8. Hikaru Ogawa & Yasuo Sanjo, 2011. "Market integration and location choice: a mixed oligopoly approach," Letters in Spatial and Resource Sciences, Springer, vol. 4(3), pages 157-166, October.
    9. Juan Bárcena Ruiz & F. Casado-Izaga & Hamid Hamoudi, 2014. "Optimal zoning of a mixed duopoly," The Annals of Regional Science, Springer;Western Regional Science Association, vol. 52(1), pages 141-153, January.


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