We show that in many applied economic models, it is possible to reduce the dimensionality of the space of actions to what we call sufficient decisions. We find that for monopoly and oligopoly in multi-sided markets and multi-product markets, the market equilibrium can be transformed into an...

In most member states of the European Union (EU), universal postal services provided by the incumbent operator are exempt from value added taxes (VAT) on the grounds that they are the “public postal service.” Other postal service providers have to charge VAT at the standard rate. The paper...

The Austrian Federal Competition Authority (AFCA) invited comment on its draft guidelines for exempting “sustainability agreements” from condemnation under Austrian competition law. That law recently changed, allowing a specific exemption for otherwise anticompetitive horizontal agreements...

Any form of Brexit will impact heterogeneously in terms of sectors and regions on the competitiveness of firms in both the UK and Europe. The ongoing uncertainty about the conditions under which the UK will be leaving the EU, creates difficulties in structurally estimating these impacts. Using...

This paper develops a simple spatial model of fund-raising, in which charities select a target population to solicit donations. First, we show that in a competitive charity market without any intervention, the number of charities in the market and/or the overall net funds raised by charities may...

In many situations governments have sector-specific tax and regulation policies at their disposal to influence the market outcome after a national or an international merger has taken place. In this paper we study the implications for merger policy when countries non-cooperatively deploy...