This research paper investigates a duopolistic market characterized by vertical product differentiation. The study considers both product qualities and consumer preferences represented as one-dimensional intervals. The focus is on analyzing the equilibrium in a duopoly game with convex...

This paper investigates an oligopolistic market with vertical product differentiation, where qualities are represented by a uni-dimensional interval. We examine the Nash equilibrium in the oligopoly game with a finite number of consumers, where each firm uses its technology and can offer a range...

We analyze how the introduction of digital technologies for storing and distributing information affects the incentives to enforce copyrights protection. We first characterize the conditions under which the change from non-digital to digital distribution may enhance or reduce profits. Secondly,...