The paper applies economic theories to give an overview of the emerging phenomenon of digital personal assistants (DPAs). A DPA is an intelligent automated system that interacts with the user through a dialogue in natural language, and meanwhile applying third-party services to obtain...

The European Commission has proposed a new regulatory tool for the governance of digital markets. The Digital Markets Act (DMA) intents to limit the market behavior of socalled gatekeeper companies to ensure contestable and fair digital markets. We review the provisions of the DMA both from a...

Experts' voting behavior is conjectured to be more objective than peer voting (own group/peers) and public voters (everyone interested), who are supposedly influenced by all sorts of subjective aspects. We examine differences in voting behavior between these groups by analyzing the voting...

Der vorliegende Beitrag betrachtet die wettbewerbs- und medienökonomischen Eigenschaften und Effekte von algorithmischen Such- und Empfehlungssystemen und ihrer Regulierung. Dabei werden nach einer einführenden Klarstellung des Sinns und der Notwendigkeit solcher Systeme in der digitalen Welt...

In dieser Festschrift für Wolfgang Kerber würdigen Kolleginnen und Kollegen, Wegbegleiter und ehemalige Schüler sein wissenschaftliches Werk und Wirken in den Bereichen Wettbewerbspolitik, Rechtsökonomik sowie weiteren Teilbereichen der Wirtschaftspolitik. Zeitgemäß bilden Beiträge zu...

In this paper, we comment on the debate about guidelines for Art. 102 TFEU in the face of the challenges brought by digital ecosystems and abuse of dominance in related markets. We take the perspective of dynamic competition economics and derive four recommendations for the future enforcement of...

The model of perfect competition is one of the most famous, most important, and most misunderstood concepts in economics. Rather than aiming to be a full-blown model of real-world competitive markets, the perfect competition model isolates the decentralized coordination mechanism inherent in all...