This paper assumes that firms can create independent divisions which compete in a market where the product is spatially differentiated. Our first result is that if the number of firms is exogenous and higher than some critical level, then Perfect Competition is the only Subgarne Perfect...

We analyze the potential trade-off between product variety and consumer information and the implications this trade-off has for product quality. We introduce a simple information accumulation process in a horizontal differentiation model with unobservable quality. As the number of brands...

We consider the role of the endogenous choice of platform quality in a broadcasting duopoly market where competing media platforms also choose their levels of advertising. We compare the equilibrium levels of quality, advertising and welfare under private and mixed duopoly competition. We show...

In this study, we consider the role of a publicly owned platform and programme quality in the free-to-air broadcasting industry. We compare the equilibrium levels of advertising under private and mixed duopoly competition, and show that the connection between programme quality and advertising...

In this paper we study the optimal trade policy in an oligopolistic market with a given number of quantity-setter firms. It is shown that under no fixed costs, the optimal trade policy displays certain characteristics but under fixed costs most of these characteristics no Longer hold.