Bose did nothing but sign an exclusive deal with the NFL. The NFL made it clear that wearing Beats is a violation of the CBA and it was the NFL's decision to enforce it just like every single other exclusive deal they have.
By your logic....
So I guess if Apple goes to the DOJ and asks that Samsung phones be banned from entering the country, it's not Apple to blame. It's the DOJ to blame if they enforce it. Ok.