Reportedly the average term is down to 4.6 years now for a Fortune 500 CEO:
https://www.google.com/search?rlz=1C1NHXL_enUS736US736&q=What+is+the+average+tenure+of+a+Fortune+500+CEO%3F&sa=X&ved=0ahUKEwj_pPTjqKzYAhXkmuAKHaz2ABAQ3rMBCCwoAg&biw=1472&bih=774
This thread is silly.
You’re not understanding it.
The point is not about the length of a ceo’s job.
It’s that so many are stepping down during the same time period.