“…In the industrial organization literature, strategic competition is widely analyzed, but the models either concentrate on interfirm competition between monolithic firms (see, e.g., Tirole 1988) or they combine intrafirm and interfirm interaction where principals of competing firms employ manager agents (see, e.g., Vickers 1985, Fershtman 1985, Fershtman and Judd 1987, 2006Sklivas 1987, Hermalin 1992, Cailland, Jullien and Picard 1995, Schmidt 1997, Jansen, van Lier and van Witteloostuijn 2007. These manager agents decide on quantities (or prices), but they are not involved in the production process itself and face no effort cost of producing.…”