In this paper we consider Voluntary Agreements (VAs) as an information-sharing device. In a duopoly model firms compete a la Cournot and aim to reduce environmental damages because consumers have green preferences that partially internalise negative externalities. However both firms are...

The key role of technological change in the decline of energy and carbon intensities of aggregate economic activities is widely recognized. This has focused attention on the issue of developing endogenous models for the evolution of technological change. With a few exceptions this is done using...

The key role of technological change in the decline of energy and carbon intensities of aggregate economic activities is widely recognized. This has focused attention on the issue of developing endogenous models for the evolution of technological change. With a few exceptions this is done using...

For a sequential, two-period decision problem with uncertainty and under broad conditions (non-finite sample set, endogenous risk, active learning and stochastic dynamics), a general sufficient condition is provided to compare the optimal initial decisions with or without information arrival in...

Digital platforms operate in multisided markets providing services through the internet to two or more distinct groups of users, between which there are indirect network effects. Direct network effects are frequently present within each group. Therefore, online platforms usually present both...

The Paper challenges the common supposition that (scarcity) rents at Heathrow airport accrue from airlines charging efficient clearing prices and instead suggests that because of oligopolistic practices, much of the rent at Heathrow is quasi-monopoly rent. It also suggests remedies that could be...

Antitrust authorities are particularly concerned with the dominant market position of tech giants such as Google, Facebook, and Amazon. These digital conglomerates are characterized by platform-based business models. However, despite their dominance, they are competing with each other to attract...

It is often argued that, first, the decision criterion of antitrust authorities should be total social welfare and that, second, mergers increasing the value of this criterion but ending with lower consumer surplus should be allowed in the name of efficiency gains realized by merging firms. This...

We explore the design of self-financing tax-subsidy schemes to solve hold-up problems in environmental regulation. The announcement of the tax rate seems to be preferable to solve hold-up problems with respect to the investment in environmental R&D. In contrast, only the announcement of the...

This paper analyzes pricing decisions and competition in network markets, assuming that groups of consumers can coordinate their choices when it is in their interest, if coordination does not require communication. It is shown that multiple asymmetric networks can coexist in equilibrium. A...