In the very best case, they simply leave. You end up with the same number of poor, but no rich. Will that make anyone happier? Those speaking of "exit tax": it's no secret that their money is not invested in Europe. So if they leave, they just leave, no exit tax. Why? You seen EU stock performance? They are all in the US. In part because far-left initiatives like that have no chance in the US. But mostly because stocks there work because money isn't being sucked out of the underlying companies by the takers on one hand, and investors also have money to pour in because they are taxed less. Very best end result: you make Europe even more behind on everything because you will have all the same takers, but even fewer makers.