Amazon acts as both a platform operator and seller on its platform, designing rich fee policies and offering some products direct to consumers. This flexibility may improve welfare by increasing fee discrimination and reducing double marginalization, but may decrease welfare due to incentives to...

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 so-called gatekeeper companies to ensure contestable and fair digital markets. We review the provisions of the DMA both from a...

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...

Energy sectors-primarily power generation and gas production, but also energy transmission and distribution-require significant capital investment in infrastructure. Market structures as well as the degree of competition and regulation are key factors that determine firms' incentive to invest....

Der Energiesektor zeichnet sich durch den Bedarf an kapitalintensiven Investitionen in Infrastruktur aus - vor allem in der Stromerzeugung und der Gasgewinnung, aber auch in der Energieübertragung und -verteilung. Sowohl die Marktstrukturen als auch der Grad an Wettbewerb und Regulierung sind...

The existence and the use of the essential facilities doctrine was questioned in theory and in practice. Although the doctrine was developed in antitrust, it became a frequently cited notion in the regulation of network utilities. Its relevance is hotly debated during the setup of the new...

Der Energiesektor zeichnet sich durch den Bedarf an kapitalintensiven Investitionen in Infrastruktur aus - vor allem in der Stromerzeugung und der Gasgewinnung, aber auch in der Energieübertragung und -verteilung. Sowohl die Marktstrukturen als auch der Grad an Wettbewerb und Regulierung sind...

Governments play a significant role in determining how markets function and use a variety of policies for this purpose, including economic regulation, trade policy and antitrust. Some of these policies (i.e. trade policy and antitrust) in principle promote competition directly, but sometimes are...