This paper proposes a formulation of coalitional payoff possibilities in games with externalities, based on the assumption that forming coalitions can exploit a "first mover advantage". We derive a characteristic function and show that when outside players play their best response...

In this paper, we tackle the dilemma of pruning versus proliferation in a vertically differentiated oligopoly under the assumption that some firms collude and control both the range of variants for sale and their corresponding prices, likewise a multiproduct firm. We analyse whether pruning...

Consumer cooperatives constitute a highly successful example of democratic forms of enterprises operating in developed countries. They are usually organized as medium and large-scale firms competing with pro fit-maximizing firms in retail industries. This paper models such situation as a mixed...