When are markets truly global? Will Europe be a single market after 1992, and how will we know? When are niche strategies sustainable? In this article, John Kay develops answers to these questions by developing the concept of the strategic market–the minimum area, product or geographical, within which it is possible to compete. He identifies the common strategic error involved in confusing the dimensions of the market with those of the industry, and warns that economic integration is not at all the same as the creation of a single marke