We analyze an oligopoly model where firms choose both quantities and access fees. Per unit prices are determined endogenously to equate quantity demanded with quantity supplied at each firm. In a Nash equilibrium of the game played by firms, the per unit prices equal mairginal cost and access...

We consider the impact of the cost paradox on the likelihood of cooperative firms to use a cost reducing Research Joint Venture (RJV) to increase research levels when spillovers are large.

We consider when homogeneous goods quantity competition models are payoff equivalent to heterogeneous goods models. When they are equivalent, changes in some cost parameters are equivalent to changes in some demand parameters. Going from homogeneous models to heteregeneous models is always...