Anecdotally it seems to depend a lot on how they got the money. Based purely on people I've known; people who become rich after working long hours for 20+ year

Anecdotally it seems to depend a lot on how they got the money. Based purely on people I've known; people who become rich after working long hours for 20+ years building up company or similar tended to be very frugal for the rest of their lives despite retiring millionaires. People who 'lucked' into a lot of money tended to wildly overspend and never achieve financial stability.