This paper analyzes the effect of inter urban buses competing on a few routes against trains within an established railway network. In line with expectations, we show that this can lead to unprofitable train service on these routes. However, within an established railway network with every track...

A general theoretical and empirical framework is developed for assessing the potential of a vertically integrated firm to foreclose downstream competitors. Using this framework a policymaker may also evaluate the empirical welfare effects from a vertically integrated firm raising rivals' costs....

We study the market for applications on Facebook, the dominant platform for social networking and make use of a rule change by Facebook by which high-quality applications were rewarded with further opportunities to engage users. We find that the change led to quality being a more important...

In this paper, I analyze the incentives of a monopolistic platform to open its infrastructure to an entrant on the buyer side of the market. If buyer and seller demands are linear and identical, and if the entrant operates on a separate market, I show that entry distorts the price structure in...

This paper surveys a variety of topics related to network economics. Topics covered include: consumer demand under network effects, compatibility decisions and standardization, technology advances in network industries, two-sided markets, information networks and intellectual property, and...

I develop a semi-structural approach to identify network effects on two-sided monopoly platforms without data on prices and quantities. A sufficient test for the existence of network effects is derived when only data on total revenue is available. If separate revenue data is available on the two...

Based on the frictional matching framework, the paper provides a theoretical model for the two-sided platform in which the number of participants on both sides of the platform and the source of network externalities are endogenously determined. The platform is shown to exhibit both positive...

Platform businesses that facilitate connections between different stakeholders play an increasingly prominent role in the economy. In 2018, the U.S. Supreme Court issued a seminal decision, Ohio et. al. v. American Express, on the analysis of antitrust issues involving these sorts of businesses....

This paper studies the effect of competition and consumer myopia on platform profits. The focus is on airports, which provide passengers with aeronautical and commercial services through airlines and retailers. Our results can be summarized as follows. First, we unravel the relationship between...

Many two-sided platforms (e.g., eBay, Google, iOS, Android, Twitter, Amazon) provide integration tools, such as modular interfaces, interactive development environments, application programming interfaces (APIs), and help desks to reduce the costs and improve the functionality of third party...