Having billions of dollars and continuing to work doesn't necessarily mean that you're not driven by money. It can mean that the drive for more money is insati

Having billions of dollars and continuing to work doesn't necessarily mean that you're not driven by money. It can mean that the drive for more money is insatiable. But I agree other factors are involved; if there are rivals left to be crushed, or any capacity for increased public attention remaining, many rich people will keep grinding.