The privatization neutrality theorem states that the share of public ownership in an enterprise does not affect welfare (i.e., any degree of privatization is optimal) under optimal tax-subsidy policy. We revisit this neutrality result. First, we investigate the case in which the private...

Previous theoretical researches show that learning from good performers yields intense competition and results in the low profitability of firms. These researchers do not take into account differentiation strategies being referred as a useful strategic tool to mitigate competition. We introduce...

Innovators who have developed advanced technologies, along with launching new products by themselves, often license these technologies to their rivals. When a firm launches a new product, product positioning is also an important matter. Using a standard linear city model with two firms, we...

We investigate the effects of restricting locations of firms into Hotelling duopoly models. In the standard location-price models, the equilibrium distance between firms is too large from the viewpoint of consumer welfare. Thus, restricting locations of firms and reducing the distance between...

This paper formulates a duopoly model in which firms care about relative profits as well as their own profits. Our purpose is to investigate the relationship between the weight of relative performance and R&D expenditure. We find a non-monotone relationship between the weight of relative...

We investigate a model where two firms choose whether to acquire information on a common competitor. We find that strategic complementarity on information acquisition exists, yielding multiple equilibria. In addition, we investigate welfare implication of information acquisition. We find that...

This study investigates the short‐run and long‐run relationships of trade and privatisation policies. In both the short run and the long run, the optimal degree of privatisation is increasing in the import tariff rate. The optimal tariff rate is strictly positive in the short run but can be...

We investigate the effects of infrastructure investments that reduce transport costs. We use a spatial model of Salop (1979). It is well known that the number of firms is excessive at free-entry equilibrium (excess entry theorem). We find that the optimal investment level exceeds the ex post...

We investigate a mixed duopoly, where a state-owned welfare-maximizing public firm competes against a profit-maximizing private firm. We use a Hotelling-type spatial model which represents product differentiation. We endogenize production costs by introducing cost-reducing activities. We show...

The paper investigates a three-country duopoly model. Two developed countries have large markets and one developing country has a cost advantage. The author finds that strategic complementarity in location choice yields multiple equilibria. One is a cost-oriented agglomeration of firms in the...