YouTube already includes comments and a chat on live streams, so close to a messaging app ;-)
Seriously though, YouTube is not a music service, or at least it looks like they don't want it to be, since the interface isn't really great for that case. It also kills phone battery if you use it that way, so YouTube music is an experience upgrade.
Seriously though, YouTube is not a music service, or at least it looks like they don't want it to be, since the interface isn't really great for that case. It also kills phone battery if you use it that way, so YouTube music is an experience upgrade.