Discuss the pros and cons of the policy described in the following quote from Fortune : According to the new thinking, any kind of work to which a company can't bring a special set of skills should be spun off, outsourced or eliminated. Thus AT&T, GE, IBM, and Shell Oil are in the process of spinning off legal, public relations, billing, payroll, and other services. What's left, whether it's a $100 million corporation or a $100 billion corporation, is the ideal size. ... For example, if marketing is a competitive advantage in an industry, then it should build up its marketing muscle and employ outside suppliers and service firms to do everything else.