This, especially in some high-paying fields like IT.
I have a friend who was working as a game dev educator. His salary was like 60% of mine. I would love to teach but it makes no sense to almost cut my pay in half.
Tbh I am not sure how to make this equation. People don't seem to want to pay for good education unless it has a label like that of a fancy university.
You don't need a unique idea to make money. You just need to provide something that others need.