The paper studies the dynamics of firm growth and firm size distributions in the pharmaceutical industry from 1950 to 2003 and in the biotechnology industry from the early 1980's to 2003. Growth dynamics are studied in the context of how the size composition of firms changes, how innovation...

Recent developments in the literature on market structure have allowed the generation of a few key testable predictions from the theory of strategic behaviour. The seminal model considers one simple but general relationship, that between market structure and market size, focusing on the...