I am not sure that I entirely agree with leg-iron on the subject of tax:
Crank up taxes on the rich, and the rich move overseas and pay no tax at all here.
Is not the purpose of the immense pressure being placed by the UK and the USA upon those smallish countries which still offer old-fashioned confidential banking simply to ensure that if one is a citizen of either of the former one will pay the taxes of one’s mother country whether one lives there or not?
Nostradunderclass prognisticates: before all that long it will also become necessary for the government, like those of all failed socialist paradises, to prevent people from going abroad (during the Cold War we used to call it ‘defecting’) before they have been completely dispossessed.