Merck is one of the largest pharmaceutical firms in the world. In the period 1985 to 1995 Merck consistently earned higher ROEs than the pharmaceutical industry as a whole. As a pharmaceutical analyst, what factors would you consider to be important in making projections of future ROEs for Merck? In particular, what factors would lead you to expect Merck to continue to be a superior performer in its industry, and what factors would lead you to expect Merck’s future performance to revert to that of the industry as a whole?

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