One thing I didn't quite realize is that they accidentally spend significant amounts of money. At a party I talked to someone who was like a financial coach for super wealthy people and he helps them clean up their shit. The way we might accidentally have a running $50/mo subscription for something we don't use any longer, they might have a $500/mo club membership they never go to. Or prebooked vacation rentals they don't visit, or maintenance on cars they don't use, etc.
If you're over 100m net worth and get 5% returns, you get over 400k/month income on capital. At that point it might not be worth your time and attention to save $50 or even $500/mo if it takes any effort.
Exactly, to use the same math from the linked comment, it's less like comparing $500/mo and $50/mo and more like comparing $500/mo for the high net worth folks to $0.05/mo for someone making a more average salary.
You could have a single part-time minimum wage job and you're not going to waste your time worrying about $0.05/mo. 60¢ a year? Please.
