We study consumer surplus in a single market when a) there is a lower bound in the consumption of the outside good and b) the weights in the social welfare function given to consumers and firms are different. We assume quasilinear utility. When the lower bound constraint on the consumption of...

We consider a model in which agents choose a single niche to act. These niches could be different markets around the world or different contests. We look for the existence of a free entry equilibrium in which no agent wishes to switch to a different niche. When agents form a continuum,...