Through strategy, a company seeks to sustain its competitive advantage. Yet only recently has the study of strategy begun to examine how long a specific advantage can be sustained. Based on a study of sustainability patterns in a number of industries, this article shows how the competitive pressures associated with product imitation can be predicted by identifying the core capabilities, or isolating mechanisms, that lie at the heart of a company's advantage. A number of these dynamic core capabilities are classified according to how fast they are duplicated. The imitation of capabilities shape many strategic decisions in companies, indeed the distinctive character of companies, and that by thinking in these terms managers enhance their company's cohesiveness and responsiveness as they pursue their strategic mission in global markets.

Supplements the (A) and (B) cases. Designed as an in-class handout at the end of Day Two.

Set in mid-1978, this case covers all aspects of the U.S. retail coffee market both cross-sectionally and historically. The market is recovering from dramatic price rises and volume drops. The overall issue is the forecast of future market evolution and the implications for the marketing strategy of each major producer. Students have to make explicit 5- and 10-year sales and market share forecasts and draw up BCG-type portfolio matrices. Case is part of a two-day series, beginning with an aggregate view of the entire market and its evolution and narrowing to a view of market strategy for a single brand.

Describes the corporate portfolio of General Foods, Procter & Gamble, and Nestle, thereby placing in context their coffee activities in the United States. The objective of this case is to allow students to evaluate each competitor's commitment to the U.S. retail coffee market and the strategic implications of those commitments.

The Vicks Health Care Division lacks a solid form entry in the OTC colds care category and has developed a "me-too" product. The main issues are whether there is an opportunity for the product, and, if so, how it should be positioned. Main teaching objectives are to use market research data as input for assessment of market opportunity and development of product positioning.

Reveals that Vicks chose a multi-condition positioning for the product. Describes testing of name and concept, and extensively reports on a four-city test market. Students are expected to evaluate both the design and results of the test, and face options ranging from termination to going national.

To be handed out during class discussion of the (B) case. Reveals that Vicks developed a second name and advertising positioning. Presents results of copy testing, and further test market results. Students have to choose between the two names and positionings, as well as decide whether to recommend national expansion.

Reveals that the new products executives have decided to recommend national expansion. They have to develop a justification and preliminary marketing plan. Emphasizes consumer and trade promotion options. Students have to complete a five-year projected P&L statement.