The paper examines the role of trade patterns in the entry and exit decisions of firms and tests the existence of symmetry between entry and exit factors. Trade patterns were found, through their entry and exit impact, to affect the structure of Greek industry rather unfavourably. Prospects seem to be bleaker within the integrated European market of the 1990s. The lack of symmetry leads to increasing concentration. The gloomy outlook is improved by the strong stand of existing, competitive firms.