This paper analyses the short- to medium-term determinants of demand for professional team sports. Focusing on the economically important demand for TV broadcasts in this area, Dietl/Franck/Roy enter territory that is mostly unexplored by sports economists so far. (...)

It is usually believed that innovation increases profits of the firms and alsosocial welfare. In a duopoly model with product innovation, we show that both thesebelieve may go wrong. We show that if the cost of innovation is not very large,prisoner’s dilemma occurs under product innovation,...