All of the tricks Buffet jumped through to get his taxes that low were intended to encourage that behavior, whatever it was. So his reinvestment of profits in the company, investments in clean energy, contributions to charity, profit losses due to forgiving debts owed by people in disaster zones...whatever it all was.

Someone making laws figured all of that was "fair."

If someone followed the given rules, dealt fairly and openly with others and made 1 billion dollars they did it fairly. The huge amount of money does not make it unfair in any way.

See, my definition of "fair" is followed the law and didn't deceive others. Obviously yours doesn't agree which kind of proves my point, doesn't it.