<span>(1) No two people agree on just what would be "fair".
(2) Even if there were agreement, the people with political clout have no reason to want a "fair" system; they want a system that benefits them. There is a reason the Republicans have been pushing through tax cuts for the rich.
(3) The tax "system" includes all the taxes: local, state, and federal. If you want the entire system to be fair, it has to be changed as a whole, not piece by piece. And that would make it hard to start and hard to maintain (any change in tax rates would also have to be coordinated) </span>
<u><em>Mixed capitalism
</em></u>
It refers to an economic model that uses the market to allocate resources, but in which the State intervenes to regulate its operation, incorporates elements of the free market economy and the planned economy, or a proposal in which property coexists deprived of capitalism and the collective property of socialism (in general, and not exclusively, state or public) in order to include broader social considerations in an economic system, for example, ethics, social justice, social welfare, sustainable management of environment, etc.
They lose their highly educated citizens to the U.S.
That is correct. A negative number multiplied by a negative number will be a positive number.