The entertainment industry is filled with a lot of more-famous-than-rich people. By these numbers David Lynch (at 78) was probably as wealthy as 1000s of random (and anonymous) successful Mag7 SWEs are at retirement.
See Will Smith.
Care to speculate on how many struggling actors sharing flats are fallen celebrities?
The Will Smiths of Hollywood are a tiny fraction of a tiny fraction.
The phenomenon at play in “Hollywood standards” poorly reflecting the totality of the Hollywood population are winner-take-all income/attention distribution and cultivation of an illusion of opulence to satisfy audience demand — not licentiousness and depravity amongst entertainment industry personnel.
Why would suddenly famous actors be any more savvy?
See the documentary "Val" on Val Kilmer.
Despite what Hollywood would have you believe, Hollywood is not exclusively populated with rich and famous celebrities.