Well, you could try to discriminate politically against somebody who wasn't practising politics to your liking, through the fact that they were adopting certain books and so forth and so on.
That seems to me like almost beyond reasonable to think that authors or publishers whose lives depend on intellectual freedom are going to try to infringe on university professors' rights. The only people who, I think, might be interested in trying to solve problems of political correctness in that sphere are in their own sphere in the university faculty or otherwise. Those people already have that knowledge. I think there's no reason not to keep track of what's being copied and to pay people fairly accordingly.