Unfortunately this is the last thing on artists' minds when they're about to sign a deal with a record label, and that isn't going to change anytime soon.
No, there won't be. The recording companies will keep doing what they do and the artist will occasionally tweet how awful it is but they can't do anything about it since it's the big bad corporation. The company will take the blame along with its cut.
Basically, use old media's strategy against them: we can't touch the big guys, they're too big. But if we could destroy someone they depend on it would eventually kill them too.
Why would a creative person who's primary method of feeding the family are checks from publishers not want their publisher to diligently protect the revenue model?