Comment by FrancisMoodie

Huh? In your example these many teachers were paid for teaching these students and were able to make a living off of teaching without the students compensating or attributing their financial (or career) outcomes to the teachers while now we have a system where we are expected to pay a monthly amount to a corporation that has inhaled all human knowledge without any financial compensation to the people who created, managed or maintained this knowledge. The effective difference being that our knowledge, which used to be a means of income, has now become a subscription cost.