Can market socialism realize the socialist vision of the good society by ending exploitation and alienation, substantially reducing inequalities of wealth and income, ensuring full employment, and correcting other market irrationalities? A comparative analysis of the organizational forms of capitalism (notably the small owner?operated firm and the large corporation) and market socialism (the self?managed cooperative that rents its capital from the state) reveals the relative efficiencies of capitalism in reducing transaction costs, in turn reducing the opportunities for exploitation. By contrast, (...) the transaction cost inefficiencies of the organizations of market socialism permit and encourage forms of exploitation that are precluded or discouraged under capitalism. (shrink)