Well your definition of "fair" just so happens to match all the "Banana republics" version of fair. Where dictators rule and grab all the wealth of the country while their population starve.<quoted text>
"Fair" would be everyone paying the same dollar amount.
Slightly less fair would be everyone paying the same percentage.
But a small number of people paying all the taxes while half the people are freeloaders is grossly unfair.
But then, "fair" is purely in the eye of the beholder and everybody has their own definition.
And your opinion is just one of many.
Apart from that, there is NO country anywhere in the world that taxes at a flat rate unless it has a high VAT tax as well. It is all done on a sliding scale that increases as earnings increase including China!