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Concentration (Determinants of seller concentration (Trends in seller…
Concentration
Determinants of seller concentration
Economies of scale
Barriers to entry
Scope for discretionary, sunk cost expenditure
Regulation
Industry life cycle
Random growth hypothesis
Distribution of firm sizes
Trends in seller concentration with random firm growth
Test the random growth hypothesis
Trends in concentration
Measurements and trends
Measures and seller concentration
Aggregate concentration
Market (industry) concentration
Hannah and Key criteria
Firm size distribution (sales data)
Herfindahl-Hirschman (HH) index
Numbers of equivalent
Lorenz curve
Gini coefficient
Interpretation of concentration measures
n-firm concentration ratio