Mixed duopoly: Differential game approach

Koichi Futagami, Toshihiro Matsumura and Kizuku Takao

Journal of Public Economic Theory, 2019, vol. 21, issue 4, 771-793

Abstract: This study formulates a dynamic mixed oligopoly model, in which a state‐owned public firm competes against a private firm over multiple periods. We adopt a differential game formulated by Fershtman and Kamien [Econometrica 55 (1987), pp. 1151–1164] and investigate how the dynamic competition affects the optimal privatization policy. We characterize the open‐loop Nash equilibrium (OLNE) and Markov‐perfect Nash equilibrium (MPNE). We show that in the MPNE, an increase in the degree of privatization has a nonmonotonic effect on the price, increasing it in a wide range of parameter spaces, which is in sharp contrast to the result in the OLNE or static analyses. We also find that the optimal degree of privatization is higher in the MPNE than that in the OLNE and static equilibrium. These results suggest that intertemporal strategic behavior changes the optimal privatization policy.

Date: 2019
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Citations: View citations in EconPapers (8)

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https://doi.org/10.1111/jpet.12372

Related works:
Working Paper: Mixed Duopoly: Differential Game Approach (2017)
Working Paper: Mixed Duopoly: Differential Game Approach (2017)
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Persistent link: https://EconPapers.repec.org/RePEc:bla:jpbect:v:21:y:2019:i:4:p:771-793

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