Pricing pressure indices have recently been proposed as alternative screening devices for horizontal mergers involving differentiated products. We extend the concept of Upward Pricing Pressure (UPP) proposed by Farrell and Shapiro (2010) to two-sided markets. Examples of such markets are the...

Drawing from the economics of two-sided markets, we provide suggestions for the definition of the relevant market in cases involving two-sided platforms, such as media outlets, online intermediaries, payment cards companies and auction houses. We also discuss when a one-sided approach may be...

We compare different methods to assess unilateral merger effects in a two-sided market by applying them to a hypothetical merger in the Dutch newspaper industry. For this, we first specify and estimate a structural model of demand for differentiated products on both the readership and the...

Areeda and Turner (1975) were the first to argue that a price below marginal costs should be considered a sign of predation. Recognizing that marginal cost data were typically unavailable, the authors concluded that a price below average variable cost should be presumed unlawful. This so-called...

We review the burgeoning literature on two-sided markets focusing on the different definitions that have been proposed. In particular, we show how the well-known definition given by Evans is a particular case of the more general definition proposed by Rochet and Tirole. We then identify the...

This paper studies the strategies employed by Catholic and Protestant nonprofit hospitals in Germany and traces them back to the theological foundations of those religions, which shape managers' values. We find that Catholic nonprofit hospitals follow a strategy of horizontal diversification and...

We analyse a newspaper market where two editors first choose the political position of their newspaper, then set cover prices and advertising tariffs. We build on the work of Gabszewicz, Laussel and Sonnac (2001, 2002), whose model of competition among newspaper publishers we take as the stage...

There are no generally accepted results regarding the objectives, decisions, and economic outcomes of nonprofit organizations, as compared to for-profit or public firms. We posit that this inconclusiveness is due to a too broad definition of nonprofits and that different types of nonprofits...

Using a newly constructed dataset on German hospitals, which includes 24 process and outcome indicators of clinical quality, we test whether quality has increased in various clinical areas since the introduction of mandatory quality reports and the online publication of part of the collected...