"I define it as one where people pay in proportion to the benefits they receive"

I believe that countries want to survive as entities, and being fair is not necesarily the best course of action. If rich people pay more, but they don't do anything aggresive in response, that's ok. Surely most of the population will be happier - and, in return, won't rise up and kill the rich. If the amount of capital going out of the country starts being so aggresive that it is dangerous for the country, the country will end up responding.