A potential reconciliation is that most of the companies left those lists via mergers with other companies on the list. It both consolidates power and gives ch

A potential reconciliation is that most of the companies left those lists via mergers with other companies on the list. It both consolidates power and gives churn to that list. I don't know whether that's true or not, but it's notable that your article counts companies as "leaving" the list if they merge with someone else.