How much of the drop do you think is due to the bearish nature of ceo departure? One would have to assume that if the company was going to go gangbusters the ceo would stay.

In short: is it this particular CEO who is that valuable? Should I pay 100m to some Joe off the street since I know they will stay put?

Zuck probably outbid him. He walked away from $30m unvested. If they paid him more, he likely would have stayed and the stock wouldn't drop $6b

CEOs leave all the time. Average tenure has dropped over the years suggesting a fierce competition for senior talent