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Is pharma rolling in cash or on the brink of a long-term decline? - Healthcare Economist
"Although successful drugs often are expensive, most drugs fail. Thus, while the returns from a blockbuster drug are large, returns from a companies’ entire portfolio may be very modest. Additionally, finding a new blockbuster drug is hard, due to the Law of Diminishing Returns."
Source: healthcare-economist.com
returns blockbuster drugs drug portfolio diminishing rolling modest