Exploration of Commodity Businesses: A recent article in Fortune magazine highlighted Dell, Southwest Airlines, Microsoft, and Johnson & Johnson among the top 10 most admired companies in the United States. Investigate these companies' strategies by accessing their websites or reviewing the Business section of their Form 10-K reports (www.sec.gov). Analyze their strategies utilizing the framework discussed in the chapter, and determine whether their products or services could be perceived as commodities. Provide a rationale for your assessment.