I see room for another platform for this kind of creator much like how twitch.tv is to game streaming. Youtube has always seemed out of place for this offering. There is always room for many sub categories of videos to branch away from the one fits all platform that is youtube.
If you owe the bank 1 million, the bank owns you. If you owe the bank 1 trillion, you own the bank (the metaphor works great when you compare the US to China).
Even with his revenue stream gone, Google will still be fine with YouTube being a platform they control. It would take several content creators of his influence to make a dent.
(I honestly never heard of him until today. 50 million subscribers? Cool story bro).
YouTube is a walled garden and a double edge sword. It's very difficult to get that kind of audience without using their platform just due to their market share.