A good chunk of the people I know that I had in mind when talking about it definitely had essentially unlimited (for all intents and purposes) trust funds from their parents.
That didn't change the fact that the art jobs they were doing were soul-sucking, even when they were working solely for themselves (literally just working on art pieces to try to present and/or sell as a part of their own business or for art galleries). Which was evident to me, based on how they would have multiple "burnouts" per year where they stop doing anything at all.
Imo being successful in art is like being successful in other fields with a long tail-end of success (where the top 1% or 0.1% is doing great, and very few actually care about the works of the rest), such as film/athletics/music/etc (with the only difference being that art seems to be more difficult to break through without pre-existing financial means).