This is a futile discussion. The axiom that "bulls make money, bears make money, pigs get slaughtered" hold true everywhere, not just in markets. If any one's financial situation requires him to pay a lot more tax than he would pay elsewhere, so much more that he is contemplating renouncing US citizenship, just hire tax lawyers and accountants instead. You know by Warren Buffet's own admission his secretary pays a double tax rate than he does, right? Like I said "bulls make money, bears make money, pigs get slaughtered".
If you are making too much and are a US citizen, just chill and hire tax pro's to do their work. Without some very special circumstances, people talking about renouncing US citizenship have no clue what they are talking about. Grass is always greaner on the other side - right.