The main reason why there are GM's in a server is to support the server in a non-self profitable way other than the healthy growth of the server. I feel that if someone were to simply want to become a GM simply for their own gain, then there really isn't much of a point, as... well... that being one of the key reasons for corruption (which is a bad thing). xD
I feel good about working as a GM of a server, because I not only get to help out the server, I also have fun doing it as well.