We survey the economics literature on dual-role platforms and self-preferencing by them.
Existing studies mainly consist of theoretical studies, but there are also some empirical …

This article focuses on the economics of digital markets with particular emphasis on those
features that are commonly deemed critical for Antitrust. Digital markets are often …

We investigate the ability of a platform to design its marketplace to promote competition,
improve consumer surplus, and increase its own payoff. We consider demand‐steering rules …

Platforms that intermediate trades—such as Amazon, Airbnb, and eBay—play a regulatory
role in deciding how to govern the marketplaces they create. We propose a framework to …

A monopolist platform uses data to match heterogeneous consumers with multiproduct
sellers. The consumers can purchase the products on the platform or search off the platform …

In this paper we explore the likely implications of the entry of Big Tech platforms into retail
banking and the appropriate response of regulators and policy makers to this new industry …

The success of digital content platforms, such as YouTube, relies on both the creativity of
independent content creators and the efficiency of content distribution. By sharing …

We study situations in which consumers rely on a biased intermediary's advice when
choosing among sellers. We introduce the notion that sellers' and consumers' payoffs can be …

We study how an online marketplace's personalized product recommendations and its
consumer profiling accuracy affect third-party sellers' competition and the market outcomes …

This paper presents a model of platform encroachment, in which a platform not only acts as
an intermediary between consumers and third‐party sellers, but also sells its first‐party …