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Network Externalities, Transport Costs and Tariffs


  • Kenji Fujiwara

    () (Kwansei Gakuin University)


This paper formulates a reciprocal market model of international duopoly with network externalities to reconsider welfare effects of reductions in transport costs and tariffs. Depending on the magnitude of network externalities, we show two possibilities. One of them, which emerges under strong network externalities, illustrates that freer trade unambiguously improves welfare for any initial level of trade barriers. This finding provides an affirmative evaluation of freer trade.

Suggested Citation

  • Kenji Fujiwara, 2010. "Network Externalities, Transport Costs and Tariffs," Discussion Paper Series 53, School of Economics, Kwansei Gakuin University, revised Apr 2010.
  • Handle: RePEc:kgu:wpaper:53

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    References listed on IDEAS

    1. Jonathan Eaton & Gene M. Grossman, 1986. "Optimal Trade and Industrial Policy Under Oligopoly," The Quarterly Journal of Economics, Oxford University Press, vol. 101(2), pages 383-406.
    2. Richard Harris, 1985. "Why Voluntary Export Restraints Are 'Voluntary.'," Canadian Journal of Economics, Canadian Economics Association, vol. 18(4), pages 799-809, November.
    3. Itaya, Jun-ichi & Shimomura, Koji, 2001. "A dynamic conjectural variations model in the private provision of public goods: a differential game approach," Journal of Public Economics, Elsevier, vol. 81(1), pages 153-172, July.
    4. Chao-Cheng Mai & Hong Hwang, 1988. "Why Voluntary Export Restraints Are Voluntary: An Extension," Canadian Journal of Economics, Canadian Economics Association, vol. 21(4), pages 877-882, November.
    5. Wirl, Franz, 1996. "Dynamic voluntary provision of public goods: Extension to nonlinear strategies," European Journal of Political Economy, Elsevier, vol. 12(3), pages 555-560, November.
    6. Rowat, Colin, 2007. "Non-linear strategies in a linear quadratic differential game," Journal of Economic Dynamics and Control, Elsevier, vol. 31(10), pages 3179-3202, October.
    7. Shimomura, Koji, 1991. "The feedback equilibria of a differential game of capitalism," Journal of Economic Dynamics and Control, Elsevier, vol. 15(2), pages 317-338, April.
    8. Calzolari, Giacomo & Lambertini, Luca, 2007. "Export restraints in a model of trade with capital accumulation," Journal of Economic Dynamics and Control, Elsevier, vol. 31(12), pages 3822-3842, December.
    9. Fershtman, Chaim & Kamien, Morton I, 1987. "Dynamic Duopolistic Competition with Sticky Prices," Econometrica, Econometric Society, vol. 55(5), pages 1151-1164, September.
    10. Syropoulos, Constantinos, 1996. "On Pareto-improving voluntary export restraints," International Journal of Industrial Organization, Elsevier, vol. 14(1), pages 71-84.
    11. Dockner,Engelbert J. & Jorgensen,Steffen & Long,Ngo Van & Sorger,Gerhard, 2000. "Differential Games in Economics and Management Science," Cambridge Books, Cambridge University Press, number 9780521637329, March.
    12. Dockner Engelbert J. & Van Long Ngo, 1993. "International Pollution Control: Cooperative versus Noncooperative Strategies," Journal of Environmental Economics and Management, Elsevier, vol. 25(1), pages 13-29, July.
    13. Engelbert J. Dockner & Alfred A. Haug, 1991. "The Closed-Loop Motive for Voluntary Export Restraints," Canadian Journal of Economics, Canadian Economics Association, vol. 24(3), pages 679-685, August.
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    Cited by:

    1. repec:ebl:ecbull:eb-17-00359 is not listed on IDEAS
    2. Anomita Ghosh & Rupayan Pal, 2014. "Strategic trade policy for network goods oligopolies," Indira Gandhi Institute of Development Research, Mumbai Working Papers 2014-039, Indira Gandhi Institute of Development Research, Mumbai, India.

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    network externality; duopoly; transport costs; tariffs;

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