摘要：AbstractWe believe that the M.E. Porter's famous analytical “Five competitive forces” tool should be modified for assessing today's dynamic industry's structure. In this paper, we introduce the dimension of time dynamics should be brought into the”Five forces” tool, as to enable managers to get clear(er) insight in the existence and nature of past, present and future (anticipated) interaction between firm and its industry environment. We also address critical analysis of the original concept, stating that it does take into consideration a firm's potential collaborative relations with determinants of industry environment. The empirical analysis of the enhanced M.E. Porter's concept by using the psychometric tool INDUSTRUCT, refined by introducing the additional dimensions of time dynamics and type of competitive forces influence on firm's efficacy in order to reveal potential positive impacts of industry structure. Our results confirm the validity and the reliability of “Five forces” framework and demonstrate relative stability of industry structure over the time, as well as significant level of positive impact of industry's structure determinants on firm's efficacy.
