Opportunism is not the only reason why firms exist: why an explanatory emphasis on opportunism may mislead management strategy

The object of the present essay is neither to overturn transaction cost economics nor to deny the reality of opportunism. Instead, it is to question the explanatory role of the concept of opportunism in the transaction cost analysis of Oliver Williamson and his followers. Williamson has suggested that potential or actual opportunism emerges as the source of the 'transaction costs' involved in monitoring and enforcing contracts. On the contrary, it is shown here that there are several additional and likely sources of contract default or incomplete performance.