The funny thing is there is an active thread right now on HN about breaking up Google (including Youtube.) Supposedly, "there isn't enough competition and there arent options."
I don't think anyone is talking about breaking up YouTube itself, unless I missed something. It would be one of the pieces Google would be broken into.
https://news.ycombinator.com/item?id=24852504
https://news.ycombinator.com/item?id=24850702
https://news.ycombinator.com/item?id=24849147
My point is how inconsistent all this is -- on one hand, there is discussion about how YouTube should be broken up because there are not sufficient players. On the other hand a huge contender just shut down because there wasnt sufficient interest in yet another streaming platform.