Really? When has that happened?

https://en.wikipedia.org/wiki/Tony_Hayward

>Anthony Bryan Hayward is a British businessman and former chief executive of oil and energy company BP. His tenure ended on 1 October 2010 when he was replaced by Bob Dudley following the Deepwater Horizon oil spill. He has been chairman of Glencore Xstrata since May 2014.

https://en.wikipedia.org/wiki/John_Legere

>John Legere (born June 4, 1958) is an American businessman who is the chief executive officer and former president of T-Mobile US. His leadership at Global Crossing was controversial, which included large executive bonuses and filing for bankruptcy.