factors potentially contributing to the downward trends: increased industrial concentration, changing labour market conditions …

firms in each industry, product market concentration will rise as industries become increasingly dominated by superstar … increasingly concentrate in a small number of firms; industries where concentration rises most will have the largest declines in … share will be greatest in the sectors with the largest increases in market concentration; and finally, such patterns will be …

al. (2017), we evaluate and confirm two core claims of the superstar firm hypothesis: the concentration of sales among … firms within industries has risen across much of the private sector; and industries with larger increases in concentration …

We propose that the effect of market concentration on firm survival is different according to whether an industry is … static (low entry and exit) or dynamic. In our empirical analysis we find support for this hypothesis. Industry concentration … increase in the 5-firm concentration ratio in a dynamic market raises the survival rate of new ventures by approximately 2 …