Jack Ma will step down from the top job at Alibaba next year
https://money.cnn.com/2018/09/09/technology/jack-ma-alibaba/index.html
It's not good for almost all of the organizations to keep their leaders stay in the same positions for a long time. That may cause hierarchy to obey all of what the leaders say so that subordinate workers can be treated better by the leaders.
It means new ideas won't arise from subordinate workers, and then the organizations will begin declining.
I'd like to tell all the presidents "Reshuffle your organization, or that one will disappear."