They just keep it in investments and it never runs out. You obviously have no clue how wealth works.Even if they are lazy deadbeats who inherited the money?The rich are rich because they deserve to be rich.
Then they lose it and are no longer rich.
I know a few rich folks who don't do anything except go on vacations and buy new houses/cars/bikes.See how that works. Haven't you noticed that rich people never retire. They work into their 80s. The closest they come is changing fields.