I think they'd like the feel of Hive, even if it's only a secondary channel, a kind of insurance against YouTube blocking them.

We might need to clarify our exact lines when it comes to IP, because there's a very grey boundary between showing some of someone else's IP using the Fair Use concept to comment on it, and those reaction channels which outright steal content and think it's okay if they play it all through but with a tiny icon in the corner where they make exaggerated "reaction" faces.

But probably the biggest problem is the chicken and egg; they'd bring an audience with them, but Hive probably doesn't have enough active users to be interesting to people who are used to getting millions of views.