Someone for whom money is important is probably not going to become an artist.
Interesting; so you may as well rule out all the old masters, the later ones and every pro photographer.
Unless a dilettante born to riches, where the artist who doesn't have to hustle to earn his keep and, to do that, money is of huge concern.
It's just one of those annoying, silly bits of folklore best ignored. I worked my ass off to make enough to feed self and family; do you think that now, retired, were I simply a mercenary I'd spend the time I do on this website, that any other professional image maker here would do so too?
Rob