This paper investigates the market equilibrium and welfare effects of two-part tariff competition. When consumers are uniformly distributed on a Hotelling line, equilibrium prices are equal to marginal costs if and only if the demand of the marginal consumer is equal to the average demand. Entry...

The first part of the paper reviews an analytical method for inverting demand in price competition to find the corresponding inverse demand under quantity competition. The method yields a simple function relating demand elasticities with inverse demand elasticities. The second part of the paper...

While competition between firms producing substitutes is well understood, less is known about rivalry between complementors. We study the interaction between firms in markets with one-way essential complements. One good is essential to the use of the other but not vice versa, as arises with an...

In this paper we study price competition, equilibrium market configurations and entry when firms compete in vertically-di¤erentiated markets producing complementary goods. We consider two complements and start from a configuration where the market for one complement is a duopoly, whereas the...

This paper analyzes the consequences of multihoming on private and social incentives for compatibility. Multihoming occurs in our model when consumers buy from both of two competing firms so as to capture network benefits. We address whether the ability of consumers to multihome means...

The purpose of this study is to investigate what theory predicts about price dynamics when firms face a decline in demand for their product due to an arrival of a new substitutable product. To this end, this paper constructs a dynamic duopoly model and simulates price paths. The study...

We analyze the impact of product bundling in experimental markets. One firm has monopoly power in a first market but competes with another firm in a second market. We compare treatments where the multiproduct firm (i) always bundles, (ii) never bundles, and (iii) chooses whether or not to...

We analyze the impact of product bundling in experimental markets. One firm has monopoly power in a first market but competes with another firm à la Cournot in a second market. We compare treatments where the multi-product firm (i) always bundles, (ii) never bundles, and (iii) chooses whether...

The static Nash equilibrium solution for a discretized Bertrand-duopoly market with asymmetric constant marginal costs recommends that the low-cost firm should charge a price equal to the high-cost firm’s marginal cost, and thus steal the entire market. This sharp prediction holds true for any...

We discuss the benefits of net neutrality regulation in the context of a two-sided market model in which platforms sell Internet access services to consumers and may set fees to content and applications providers on the other side of the Internet. When access is monopolized, we find that...