Even if it was an immoral deal (I'm not convinced), we're not talking about someone who was coerced into a deal due to predatory practices or an exploitative power imbalance.

Rogan wanted to give control over his catalog in exchange for heaping gobs of money. He didn't have to do this if he didn't want to (he was already independently wealthy), but he did want to, so he did it, and was not harmed in any way.