lists five well-known companies and highlights their distinctive competencies, differential benefits, and competitive advantages. First, review this table in your group and discuss how these three factors are interrelated. Then choose three other well-known companies (note: choose firms so that most of your team members have a reasonable knowledge of their marketing strategies) and construct a similar table for these companies. Finally, for each of these new firms, do you think that their competitive advantage is sustainable, or will they need to work to further improve their competitive position in the future?