'why is reselling stolen stuff bad' if the professor took all human knowledge, much of which was explicitly not free, and used it to make a for-profit knowledg

'why is reselling stolen stuff bad' if the professor took all human knowledge, much of which was explicitly not free, and used it to make a for-profit knowledge machine that extrudes unreliable summaries of that knowledge, then yes, being obligated to teach for free would be a fitting punishment.