Let Adam Smith simplify: "For one very rich man, there must be five hundred poor, and the influence of the few supposes the indigence of the many." 
Those who receive the most 'benefit' of a nationality ought to contribute the most to that nationality: they live with exponentially greater luxury, they should pay an exponentially greater share. It's not by the sale of their own blood that earned their luxury, but by the sale of others. If you get rich by selling your OWN blood, then I say hands off your riches. Alas most people have the same amount of their OWN blood to sell, so any richness must derive from shedding or coercing it from others. And P.S. - Who subsidized the Banks that were Too Big too Fail?