A major advancement in the strategy field is the development of models where firm heterogeneity is an endogenous creation of economic actors. - Richard P. Rumelt

A strategy coordinates action to address a specific challenge. It is not defined by the pay grade of the person authorizing the action.

[ Diversification strategy is] a firm’s commitment to diversity per se, together with the strengths, skills or purposes that span this diversity, shown by the way in which business activities are related one to another.

I consider myself a mainstream researcher in the field of business policy, and the ideas I want to describe in this paper concern the foundations of a theory of business strategy that is rooted in economics. But is such a paper, whatever its merits, really appropriate at a conference entitled 'Non-traditional Approaches to Policy Research'? Surprisingly, it is. The use of economic theory to model and explicate business strategy, as it is understood within the field of business policy, is distinctly non-traditional.