Piracy

Same for me, about a decade ago this was already a thriving piracy area. My professors were about 80/20. It may be because it's an art college, about 80% of the time they said a version or two behind would be fine, which a previous version loses all value when a new one comes out so you can get it cheap off amazon. 20% were hard asses that said you HAVE to have the newest version and you HAVE to get it before classes start and can't compromise with them. I can't imagine my rage if I would have had some of those new "pay $80 to access your math book & coursework that expires after the class" that were starting to happen.