How much do Grand Masters make per year. How much to INGM make in comparison to regular GMs. Also is it more profitable to teach chess or to be active in Large tournaments?

What's an INGM?

If you ask this question, you are in the wrong field. GEAUX SAINTS!

I would like to refer you to Natalia's article about the same topic here:

http://www.chess.com/article/view/making-money-in-chess

International-national grandmaster mayber?

To be active in Large tournaments is profitable only if the player is good enough to win some of them.

This tournaments demand some travels and other costs that can be paid by a sponsor. But, again, it is very unlikely someone would get a sponsor without being good enough.

Many sports have a large public that pays to watch games, buy jerseys and other stuff. So the athlets are well payed. Chess has a small public that would do similar things.