Card payment systems are complex and dynamic, and mostly regarded as two-sided markets. There is consensus in literature as to the fundamental elements of the structure of said markets: firstly, the existence of two groups of economic agents, the merchants and cardholders, requiring services from a platform with interdependent demands; secondly, the resulting network externalities from this interdependence; thirdly, the Non-Neutrality present in the price structure, and finally, the role of platforms within the market scheme.
Some of the difficulties that arise in these types of markets are associated with the assessment of the social efficiencies that are generated by the price structure of payment platforms and how to define interchange fees and charges and the potential antitrust issues that may arise, among others. For instance, understanding and assessing price distribution and the impact of externalities on price definition, may be challenging for both competition agencies and regulators, as the price structure in these markets affects the dynamics of the transactions that take place within the market.
The goal of the session was to dive into a series of key questions on the topic and to explore how enforcement and regulatory efforts have evolved.
Background note EN | ES
Call for contributions EN | ES
Speakers
Esteban Greco, Antitrust, Competition Policy and Regulation Economist Director, Global Economics Group and former president of the National Commission for the Defense of Competition in Argentina (CNDC)

Beatriz Yemail, Director, Global Economics Group

Rosa M. Abrantes-Metz, Practice Co-Leader, Global Antitrust & Competition - Brattle