You have to love the " even higher taxes " as if the USA were a high-tax regime already and Australia barely manages to top it. For the "Rich people" at issue, the USA has some of the lowest taxes anywhere. Jamaica has lower top-tier taxes than the USA does (or anybody): only 15%. Why not move there? English spoken, close to the USA, sunny beaches.
No, seriously, libertarian types: why not Jamaica? There is no "Galt's Gulch" in the real world (we're sorry) but you could move to Jamaica. I can't figure out why they don't.