We study general discrete-types multidimensional screening without any noticeable restrictions on valuations, using instead epsilon-relaxation of the incentive-compatibility constraints. Any active (becoming equality) constraint can be perceived as "envy" arc from one type to another, so the set...

The present paper provides a descriptive analysis of the second-degree price discrimination problem on a monopolistic two-sided market. By imposing a simple two-sided framework with two distinct types of agents on one of its market sides, it will be shown that under incomplete information, the...

We study pricing by multiproduct firms in the context of unregulated monopoly, regulated monopoly and Cournot oligopoly. Using the concept of consumer surplus as a function of quantities (rather than prices), we present simple formulas for optimal prices and show that Cournot equilibrium exists...

Discussion of "The Pricing Behavior of Firms in the Euro Area: New Survey Evidence" by S. Fabiani, M. Druant, I. Hernando, C. Kwapil, B. Landau, C. Loupias, F. Martins, T. Mathä, R. Sabbatini, H. Stahl, and A. Stockman (2004); Presented at the Inflation Persistence Network (IPN) Conference on...

This paper reformulates and simplifies a recent model by Heidhues and Koszegi (2005), which in turn is based on a behavioral model due to Koszegi and Rabin (2006). The model analyzes optimal pricing when consumers are loss averse in the sense that an unexpected price hike lowers their...

Does free entry result in the socially preferred order of market entry for heterogeneous firms? This paper examines the welfare effects of sequential market entry by using a simple entry-deterrence model with heterogeneities in fixed and variable production costs among firms. In particular, we...

We propose both a monopoly and a duopoly model of a two-sided market. Both settings are fully comparable, as we impose a homogeneous good produced at zero costs without capacity constraints, as well as identical parameterization of market sizes. We determine the duopoly equilibrium and the...

We make a case for price-increasing competition on “competitive bottleneck” two-sided markets. Unlike previous literature on price-increasing competition and two-sided markets, we abstract from product/platform differentiation, structural differences, scale effects, search costs, and...

Does free entry result in the socially preferred order of market entry for heterogeneous firms? This paper examines the welfare effects of sequential market entry by using a simple entry-deterrence model with heterogeneities in fixed and variable production costs among firms. In particular, we...

The article present a brief analyze of theoretical virtues of free competition in relation with some visible limits and negative consequences observed in real economic life. Social intervention to correct (at least in part) those social failures and the new responses of the firms are discussed...