> Don't they realize that having money early in life is important for starting a successful company? - this isn't necessarily something they want to optimize f

> Don't they realize that having money early in life is important for starting a successful company? - this isn't necessarily something they want to optimize for - there's a lot more to growing up wealthy than just the balance of your bank account (opportunities, education, connections, name recognition, not having to work from very young age) - their children do have money early in life, lots of it too. People like Buffet or Gates have left their children multiple millions of dollars just not all the billions they have.