Well let him see the numbers talking by themselves... Maybe he need to check how much money he is doing and how much money the Top Dtubers are doing right now with way smaller followings and number of views... and he might regret and change his mind very fast! :D
It is scary and a lot to learn... We just have to prove the Internet the system is sustainable and that is the future :D
I'm quite sure this video alone made more than his channel does in months haha
Yeah i bet so. Nowadays big youtubers do way more money in sponsorships and brand deals, movies, tv, affiliate marketing, books, merch than actually adsense money.