I guessing that within a year, two years at most, Mark Z. is going to step down from a leadership position at Facebook.
He may still be there on advisory status, but not the main decision maker. Facebook may have become too big and unwieldly for just one person at the top. Some see it almost like a (data-collecting) utility vs a social media plaything.
My prediction is that MZ will be gone before the year is out. As for Ms. Lean-in, when the new CEO takes over, she will be departing shortly thereafter. This stock will continue its downward trend, and the stockholders, despite Zuckerberg’s huge stake, will oust him.