Remember, Zuckerberg is literally a totalitarian despot. The Facebook corporate structure was built so he could never be fired. He owns a controlling share of the company. He can literally do whatever he wants. In his kingdom, he is an absolute monarch.

This is not a good thing. When you don't have to worry about ever being replaced, you inevitably surround yourself with yes-men who will tell you what you want to hear. There's a reason autocracies all end up collapsing eventually.