My understanding is that two Pittsburgh entities had NIL agreements with Addison to use him in ads and commercials. When USC/Riley approached him with a more lucrative deal, those entities had claims against them for inducing breach of contract and tortious interference with contractual advantage. They also had a claim against Addison for breach. The tortious interference claim has particularly sharp teeth because it can include an award of punitive damages. For whatever reason, they chose not to pursue those claims.
Pitt had no claim but those entities did. A lawsuit wouldn’t have prevented him from leaving Pitt, but it could have had significant financial repercussions for Riley, USC and the entities in California which entered into NIL agreements with Addison. Moreover, because of the punitive danages claim, a court could have required those entities to open up their books. To determine the appropriate amount of punitive damages, a business’ income and net worth both can be relevant.
I can’t help but wonder if that had happened would it have changed the trajectory of NIL.