1997—2012年间，三分之二的美国行业经历了市场集中度升高，创纪录的74%的员工在历史悠久（16年或以上）的老牌企业工作。
Between 1997 and 2012, two-thirds of America’s industries experienced an increase in market concentration, and a record 74% of employees are working at these aging (16 years or older) incumbents.