They probably will at first. But they will want to come back. And billionaires really don’t like not getting what they want, even if it costs them more than they want to get it. You don’t need to be the lowest bidder to get billionaires. They won’t all go live in Bermuda or LA forever. What good is their money if it doesn’t let them live wherever they want? You already have all the things you need to attract them. Culture, history, prestige, safety. You will have even more of al those things when you make them pay their share.