According to one author, a firm has a competitive advantage when it is able to create more economic value than rival firms. In this case, economic value is simply the difference between the perceived benefits gained by a customer who purchases a firm's products or services and the full economic cost of these products or services.Thus, the size of a firm's competitive advantage is the difference between the economic value a firm is able to create and the economic value its rivals are able to create. Does this observation hold true in health care? Why/not?