Once you buy the argument that some segment of the citizenry should lose their rights, just because they are envied or resented, you are putting your own rights in jeopardy-- quite aside from undermining any moral basis for respecting anybody's rights. You are opening the floodgates to arbitrary power. And once you open the floodgates, you can't tell the water where to go.
The moral bankruptcy of the notion that third parties can decide when somebody else has "enough" money is matched by its economic illiteracy. The rest of the country is not poorer by the amount of Bill Gates' fortune today and was not poorer by the amount of John D. Rockefeller's fortune a century ago.
