In this paper, we study a simple model in which two horizontally differentiated firms compete in prices and targeted advertising on an initially uninformed market. First, the Nash equilibrium is fully characterized. We prove that when the advertising cost is low, firms target only their...

In a spatial competition model with exogenous fixed costs and divisible goods, we obtain non-Suttonian results. When the economy is infinitely replicated, the number of firms does go to infinity but, as consumers' income goes to infinity, the equilibrium number of firms tends toward a finite...

In this paper we characterize the equilibrium of a duopoly market which exhibits advertising spillovers. Interestingly, we prove that the relevant distinction is not between pure positive and pure negative advertising spillovers but between strong positive spillovers and weakly positive or...