I think some of this attitude comes from my experience living in L.A. If you talk to most people long enough, it almost feels like everyone has a job to support the pursuit of their real dream. Hollywood is renown for people coming here to follow their dream. And that internal process of taking an idea or a passion and bringing it to life is the essence of art. Whether it comes to fruition or bears financial rewards is a completely separate and uncontrollable external phenomenon.
It may be much tougher for places that suffer from great poverty or repressive cultural and/or political environments, but it’s not impossible.
For inspiration, I recommend the Brazilian movie “City of God.”