The reason countries rise and fall is the syphoning all the money to a very few. It is amazing how so many folks cry about paying too much of a percent, but have no problem using a rigged tax system that benefits the wealthy with all the writeoffs and loopholes. It is incredible the amount of wealth gained by corporations. Buy expensive art . . . Loan it to a museum for writeoffs and benefits. Free lunches, tickets and a thousand other things to write off IF you are already wealthy. Each successive million is easier than the last due to the tax loopholes and writeoffs.  If you want the tax to be the same percent, then how about charging a price for goods and services relative to income?
Empires collapse because of such a disparity of income, so don't lose your head over being able to play a system that rewards greed over labour.