Bei der Besteuerung nicht oder nur begrenzt handelbarer Dienstleistungen (wie z.B. lokale Postdienstleistungen) entfällt der Anpassungsdruck des internationalen Steuerwettbewerbs weitgehend, sodass etwaige Wettbewerbsverzerrungen insbesondere zwischen verschiedenen inländischen...

This paper argues against the rapid implementation of capacity mechanisms in Germany. There is no systematic, non-temporary market failure in the German wholesale electricity market which could justify such a Government intervention. Neither the low elasticity of demand nor debatable public good...

This paper summarizes the peculiarities of online markets and discusses recent antitrust cases related to online markets. Following a brief description of the online markets' characteristics and potential tendencies for concentration the paper first discusses the antitrust allegations and...

In diesem Beitrag werden die potenziellen Vorteile beleuchtet, die sich durch die Digitalisierung auf den Märkten für urbane Mobilität Verbrauchern und neuen Anbietern bei einer adäquaten Regulierung eröffnen. Zunächst führt der Markteintritt neuer Mobilitätsanbieter ganz grundsätzlich...

Given various recent antitrust investigations on the retail sector, we deal with uncovering demand systems substitution patterns for a particular market (diapers) to investigate the inter-format competition (supermarkets vs. discounters vs. drugstores). Using the uncovered demand system we...

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and...

This paper estimates demand elasticities for the Turkish mobile telecommunication market. In contrast to most other studies, firm level data is used to estimate dynamic panel data models including instrumental variable techniques. Both short- and long-run elasticities are calculated, yielding a...