There is a caste system whether or not the government admits it or not.
The people that gain the most from the system should also pay the most to the system.

You would just cement the class system with your ideas.

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Walt Whitman
"I say that democracy can never prove itself beyond cavil, until it founds and luxuriantly grows its own forms of art, poems, schools, theology, displacing all that exists, or that has been produced anywhere in the past, under opposite influences."