This chapter focuses on the economic mechanisms at work in recent models of advertising finance in media markets developed around the concept of two-sided markets. The objective is to highlight new and original insights from this approach, and to clarify the conceptual aspects. The chapter first...

This thesis strives to offer new insights in two main areas. First, in the well-researched domain of payment cards chapters 2 and 3 investigate an aspect that has hitherto been scantly examined, namely, the fact that merchant usage fees differ substantially among merchant sectors. Additionally,...

Motivated by the unprecedented availability of consumer information on the Internet, we characterize the winners and losers from potential privacy regulation in the context of four commonly-used oligopoly models: a linear city model, a circular city model, a vertical differentiation model, and a...

We study a duopoly model where each firm chooses personalized prices for its targeted consumers, who can be active or passive in identity management. Active consumers can bypass price discrimination and have access to the price offered to non-targeted consumers, which passive consumers cannot....

This paper analyses the sources of supermarket power vis-à-vis shoppers and independent brands. This power transforms leading supermarkets into vertically-integrated competitive bottlenecks that are able to restrict competition between brands (including their own ones) and reduce consumer...

This paper evaluates the effect on competition of adopting the FTC's product hopping theory as an antitrust doctrine. The paper criticizes the theory and explains why it would be a mistake to adopt it as a guide to antitrust liability

Over the past decade, an increasing number of firms have delegated pricing decisions to algorithms in consumer markets such as travel, entertainment, and retail; business markets such as digital advertising; and platform markets such as ride-sharing. This trend, driven primarily by the increased...

As part of the Modification of Final Judgment (MFJ) that implemented the divestiture of the Bell operating companies (BOCs) from AT&T on January 1, 1984, the BOCs were forbidden to carry telephone calls from one local access and transport area LATA) to another. Although the Telecommunications...

Data is often at the core of digital products and services, especially when related to online advertising. This has made data protection and privacy a major policy concern. When surfing the web, consumers leave digital traces that can be used to build user profiles and infer preferences. We...

Motivated by several recent papers on oligopoly theory, we characterize geometric properties of a class of inequalities involving the product of two integrals of the probability density quantile function and its reciprocal. Through three applications, we illustrate how our characterization can...