This paper introduces a novel analysis of the classic "persistence of leadership" question, and applies it to a newly constructed dataset for Japanese manufacturing. The analysis rests on an appeal to an empirical "scaling relationship" between current market share and the variance of changes in...

This paper examines the evolution of a skew distribution of firm sizes from the viewpoint of the ?Bounds? approach to market structure. It confines attention to the role played by non-strategic factors (statistical independence, and cost side-effects). A model is proposed, which leads to a...