[Albion Wilde]

That island would have cost a billion dollars to set up. Not even Bill Gates has that kind of money to throwaway

Uh, that's less than one percent of his wealth. A billion would go into his net worth one-hundred and twenty-six times. I think he could spare it.

[Jonty30]

That’s less then one percent of his net worth, not his liquidable assets. On paper, you might be worth $1 million because of your house, but you don’t have a million to spend unless you sell the house.

[Mr. K]

Exactly. Not only that but spending money on assets (land, buildings) is an investment. What do people think rich people do with their money? Bake it into pies? Or Keep it in a big pile in a building where they dive into it like Scrooge McDuck?