I seriously doubt YouTube will go the way of MySpace or Yahoo. I'm only saying this because obviously YouTube is back by a multi-billion dollar behemoth of a company. I think no matter how much money YouTube hemorrhages, Alphabet will do everything in there power to keep the platform going. I think alphabet sees the benefit of having a monopoly on the video sharing space and I don't think they'll be giving it up easily.
I think the only thing that will change this is a really, really bitchnin' decentralized video platform that matches YouTube almost 1:1 and has solid backing and good notoriety. I mean, I know there's stuff like dtube (which btw I really love!), but these platforms are, sadly, just not there yet. Fingers crossed they'll get better though!
Besides that, I pretty much agree with most of what you and Tim Pool are saying. The way Alphabet operates is bad and very anti-consumer! Hopefully the new age of decentralized apps and blockchain technology will put an end to there nasty deeds.