I've been a student across multiple universities where the academic staff and school heads have actively shown predatory publishers, like those mentioned in thi

I've been a student across multiple universities where the academic staff and school heads have actively shown predatory publishers, like those mentioned in this thread, the front door. Those academics published their own course notes, and printed spiral bound texts on campus with reading included. Able to be purchased for $10 each. They wrote their own presentations. We did have some textbooks, though only for particularly advanced subjects, and those were the sort of texts whose content doesn't change particularly much. The issue with the predatory practices, as you rightly point out, is that some institutions, for whatever intrinsic reasons, are prepared to accept the predatory lock in business practices which disadvantage students and create an exorbitant amount of waste.