Very true. I've literally seen this play out with some friends and cousins in extended family in the last 10-15 years. At a critical period, some had to find work to support the family especially as the health of parents started failing, the ones who could rely on family wealth were able to focus full time or almost full time on their art and are now climbing the echelons as established artists.
This is no different than historical standards of artwork. Indeed, it is from those who can afford to sustain an independent spirit, where genuine artistry extends itself into the human pursuit of perfection. When money is not an object this eternal motivation can progress itself unhindered.
Lots of poor people live with their parents, you see that all over the world. Also lots of rich people disown their kids. That has more to do with the mentality of your parents than anything else.
I’m putting this quote on Twitter. :). What handle should I use to credit you?