Since this is driven by the entertainment industry, a solution would be to just stop consuming entertainment. They've been fucking with copyright long enough trying to get their old business models to stop failing, why are we still giving them money?
Small labels. All kinds of niche music is not affiliated with the big associations. Ketzer Records is one, for example. That's one from the metal subgenre (Black/Pagan, Death, Doom, Ambient). I assume all niches have their own small labels.