I haven't read all this thread so apologies if this has been said before, 
A solution to this problem is for artists to get together and form some sort of co-op, starting a new library run fairly and for everyones benefit,  once people saw this working, content would migrate across because of the better royalty split, and we could get these vultures off our backs, I would get on board such a venture, there is still a great living to be made from stock, its getting the money flowing to the creators of the content thats the problem.