In some industries, monopoly is natural. One provider can serve the relevant demand cheaper than two or more firms. If the monopoly is not contestable, i.e. not controlled by a credible threat of entry, regulation is necessary. The essential facilities doctrine is one such regulatory tool. It...

Using data on the valuation of Christmas gifts received by students in different fields at a German university, we investigate whether the endowment effect differs between students of economics and other respondents and whether it varies with the market price of the object under consideration....

The importance of digital platforms and related data-driven business models is ever increasing and poses challenges for the workability of competition in the respective markets (tendencies towards dominant platforms, paying-with-data instead of traditional money, privacy concerns, etc.). Due to...

The EU electricity directive (96/92/EC) established the right of the member states to choose between Regulated and Negotiated Third Party Access (RTPA and NTPA). The interest group theory is able to explain whether the introduction of NTPA in Germany had been an interest group equilibrium under...

Reviewing the development of network access charges in the German electricity market since 2002 reveals significant variation. While some firms continually increased or decreased their access charges, a variety of firms exhibited discontinuous behavior with price changes in both directions. From...

Der Koalitionsvertrag beinhaltet hinsichtlich der digitalen Infrastrukturen viele Forderungen, die seit längerem von Praktiker:innen in den Ländern und Kommunen erhoben werden. So bekennen sich die Regierungsparteien erstmals zu einem Glasfaserinfrastrukturziel. Damit setzt der Bund um, was...

Die Wasserpreise in Deutschland werden im Zuge der neuerdings aktivierten kartellrechtlichen Missbrauchsaufsicht verstärkt kontrovers diskutiert. Insgesamt ist der Regulierungsrahmen der Wasserwirtschaft unter Veränderungsdruck. Dabei steht die Entgeltkontrolle im Mittelpunkt des Interesses....

This paper focuses on the legal monopoly for sporting bets in Germany. We analyze the pricing behavior of the monopolist ODDSET and find that typical pricing inefficiencies on betting markets are reinforced under the monopoly. This result in conjunction with the decreasing tax revenue may...

This paper focuses on the legal monopoly for sporting bets in Germany. We analyze the pricing behavior of the monopolist ODDSET and find that typical pricing inefficiencies on betting markets are reinforced under the monopoly. This result in conjunction with the decreasing tax revenue may...