The only kind of tax that doesn't redistribute wealth is a capitation tax. All other tax money from the people who earned it and give it to people who didn't earn it.
This statement assumes that maximum concentration of wealth possible w/r/t taxes is natural and proper. It is certainly and absolutely not economically healthy, and I would assert that there is no such thing as "natural and proper" distribution of wealth apart from economic health.
It doesn't assume a thing about the concentration of wealth. Income redistribution is a moral issue, not an economic issue. Redistribution means taking wealth from the people who earned for the purpose of enriching people who haven't earned it. To avoid that, all social programs that dispense swag to favored constituencies would all have to be terminated. That would include all manner of internal "improvements," that exist mostly for the sake of dispensing jobs. Whatever the "normal distribution" of income might be, it's irrelevant to the issue of redistribution.
Since every person in this country has an equal stake in its success, each person should be obligated to contribute an equal share to fund it. That's the moral basis of a capitation tax. There is no moral basis for a progressive income tax, or an income tax of any stripe, for that matter. Government has no business deciding what the distribution of income should be because government doesn't own my income or anyone else's.
What you are attempting here is to deliberately obscure the distinction between wealth that is obtained morally, that is wealth obtained through voluntary transactions, and wealth that is obtain immorally, that is wealth that is obtained through force, such as through taxation or theft. How wealth is obtained doesn't even enter into your redistribution calculus. That omission is deliberate since you don't want to discuss the morality of taxation.
Also, your statement ignores other factors such as property rights enforcement, contract law enforcement, and corporate chartering, which affect the distribution of wealth at an underlying level. (Granted none of those would exist in the type of society you say you prefer -- but then, neither would taxes, and actually neither would capitalism.)
True, enforcing property rights affects the "distribution" of wealth only because failure to enforce them means any thug can come along and take whatever you have earned. In the year 410 AD Rome failed to enforced the property rights of its citizens when Alaric laid siege to the city and sacked it. Alaric "redistributed" the property of the Romans to himself and his fellow Visigoths. That's what you mean when you claim enforcing property rights affects the distribution of wealth.
Of course, you think low taxes "encourage outsourcing" when precisely the opposite is the case.
No, I think that low or high taxes have no measurable effect on outsourcing. I do think that tax incentives to outsource encourage outsourcing, but the biggest single incentive is the low price of foreign labor.
What tax incentives "encourage" outsourcing?
Your definition of "redistribute wealth upward" means to stop redistributing it downward.
No, because I don't accept your arbitrary assertion about what a "normal" wealth distribution is or should be.
Yes because, as I explained previously, the "normal" distribution of wealth is irrelevant to the question of redistribution. The issue here is how wealth is acquired, not how much of it is acquired.
About "earning": this word implies labor.
It implies no such thing. That's the Marxian conception of the term, not the moral definition. To "earn" something is to receive it through a voluntary exchange. On the other hand, by definition, wealth obtained through force or threats of force is theft.
The whole point of capitalism, however, is to reward not those who earn, but those who own, at the expense of those who earn. This is a vice of the system. Capitalism functions at all well only when that vice is curtailed, so that a healthy portion of the wealth produced goes to those who earn it, rather than to those who own it.
The point of capitalism is to ban the use of force from human relations. That's not a "vice" of the system. That's the primary virtue of the system. Capitalism does not function well when various interest groups use the government monopoly on force to plunder and loot other members of society.