>To answer your question succinctly, no, you don't want "other youtube" you want something sufficiently different to avoid youtube's pitfalls.

I argue "other youtube would suffice". We see this with Youtube streaming needing to actually compete due to Twitch existing, and vice versa. There's still the likely issue that they both fall into legal troll pitfalls, but I argue that they will avoid more of them in an attempt to compete for a better service.

With video hosting, Youtube doesn't need to compete.