This paper shows the possibility that, under certain conditions, it can be socially optimal for the public firm not to privatise its whole production capacity but to retain a part of it, even when private operation of the production facilities is strictly more cost-efficient than public operation.

This paper provides a simple reduced-form framework for analyzing merger decisions in the presence of asymmetric information about firm types, building on Shapiro's (1986) oligopoly model with asymmetric information about marginal costs. We employ this framework to examine what types of firms...

We develop a mixed oligopoly model with one public firm and two private firms to explore the licensing strategy considered by the innovated private firm. The major findings of our paper are that: firstly, if the patentee licenses the public firm under some plausible parametric range, the public...

We provide a framework for analysing bilateral mergers when there is two-sided asymmetric information about firms’ types. We introduce the concepts of essentially monotone decreasing (EMD) and increasing (EMI) functions, which generalize the respective mono-tonicity properties. If the profit...

This study investigates social welfare and privatization depending on the government's preference for tax revenues and the timing of wage setting in either a unionized-mixed or a unionized-privatized duopolistic market. We show that bargaining over wages is always sequential regardless of who...

By introducing the government's preference for tax revenues into the theoretical framework of unionized mixed oligopolies, this study investigates the efficiency of privatization. The results are twofold. First, regardless of the government's preference for tax revenues and the number of private...

By introducing the government's preference for tax revenues into unionized mixed duopolies, this paper investigates how the preference can change the government's choice of tax regimes between ad valorem and specific taxes. Main results are as follows. Given that one of the tax regimes is...

We estimate the economic surplus created by Medicare Advantage under its reformed competitive bidding rules. We use data on the universe of Medicare beneficiaries, and develop a model of plan bidding that accounts for both market power and risk selection. We find that private plans have costs...