YouTube Red, Music Key, Google Android Play Music All Access Subscription, etc.
Don't get me wrong, the actual service they provide is good, and Music Key (advert free YouTube music videos) was a nice value add. This too will only expand Music Key into other videos.
I do worry a little bit that long term Google Music subscribers will wind up seeing price increases to pay for YouTube Red. If all I want is JUST Google Music, then all I should have to pay for is JUST Google Music, and that is fine today as there are no price increases, but ask me again when the first price rise is announced a few months from now.