As someone who has lived for most of the last year outside of the US (of which I’m still a citizen) I’ve met a lot of people who fit into this pan-national category. In fact many people have multiple nationalities (something the US doesn’t recognize). And many people I know have lived most of their lives outside of the country of which they are citizens.
It’s an interesting development and one that I think will only increase. When will people be able to choose to be just global citizens?
Saverin belongs to a pan-national class. He lives at the extreme end of the spectrum of ideas and of money, both of which are globalised. He once moved to America, creating wealth and taxes. Now he is moving Singapore, because he is in the business of predicting what will come next over the horizon and protecting his personal assets, so he can be a part of it. America has no right to complain: he owes it nothing.