Many artists and self-employed creatives are themselves poor working people - making art is work (and so is marketing it to potential customers), and most artists are not lucky or successful enough to become wealthy doing it.

But yes, I think there is a sense in which people who are driven to create have some kind of ineffable, cultural capital that people without this drive do not have. So a neighborhood that is full of artists is more interesting, and therefore more valuable to spend time in, than one that isn't.