All Article Summaries

Incumbents enjoy competitive advantages over new entrants, because users hesitate to abandon a widely-used platform for one with few users. A new model explores factors that increase and reduce incumbency advantage.

Antitrust authorities express concerns about the power of "Big Tech." Authorities should apply advances in the study of platforms to better understand the beneficial role of digital platforms serving as intermediaries.

Large incumbent firms may take steps to eliminate innovative nascent competitors, either by merger or by excluding them from the market.

Some economic models omit intermediaries, entrepreneurs, and other key factors in dynamic markets. The study of platforms like eBay and Etsy leads to the development of more realistic economic models.

This paper reviews studies that consider whether antitrust law should be used to regulate big data. Most conclude that such a use of antitrust law could harm innovation and consumers. Generally, the use of big data supports competition and benefits consumers.

This paper considers the application of traditional antitrust analysis to online markets. This paper identifies several ways in which online markets differ from regular markets. Most online markets are multi-sided, and entry barriers are low.

This paper looks at how consumers, search engines, and sellers of goods use information.

This paper asks whether networks need special antitrust treatment.