The investor uses the time value of money differently. In cash flow valuation, it presumes a rate of return which is independent of (but ideally greater than) inflation. Other than governmental avarice, it makes no sense to tax the portion of an asset's gain in dollar value which is due only to currency devaluation. Indexing capital gains taxes to inflation also curbs governments incentive to impose inflation upon us. (The fact that money sitting idle in a mattress is a bad investment during inflationary times doesn't really matter.) You'll note that government economists always decry deflation. Heaven forbid that prices & costs should fall & the government would find taxes tumbling.
If people are finding that their rate of return on equity is not exceeding inflation, they need to find a new line of business. Indexing the tax structure to inflation adds complication in the system that is unnecessary.
I'm not convinced the system lacks stabilizing aspects already, nor that the effect you claim is exponential.
Out of developed countries, the US has among the largest wealth gap. The numbers, including sources I've presented, clearly show an exponential problem.
And I've described how the super rich have exceedingly low tax rates. Having a regressive tax system is not only unethical, but causes instability.
The death tax is one. And there's also a tendency for the fortune of one generation to be diluted among subsequent generations, eg, the Kennedy family's bootlegging profits. The system stability analysis is complex, & more than I care to fully explore here, but let's look at this another way. The problem isn't so much the disparity, as it is that the lower classes perceive their needs aren't met. The mere redistribution of wealth is unlikely to solve this problem, since it has anti-productivity incentives. I prefer to focus upon what tax & regulatory structures would encourage success for the non-wealthy.
There are dilution factors, but based on the rising gap, they clearly aren't enough. Smart re-distribution of wealth can result in increased productivity, not decreased productivity. A better educated and healthier population with improved national infrastructure and reduced deficits is productive, not anti-productive.
And I'm not proposing a highly steep progressive structure. I'm basically proposing that the existing progressive tax structure is actually what they pay, rather than purposely missing the types of income that the truly rich really make.
Of course, this will make the cost of capital higher, which is a damper on the economy. I prefer taxation which curbs consumption rather than productivity.
It's not going to raise the cost of capital higher by any reasonable degree. Especially dividends and personal capital gains of those worth many millions.
Remember, this isn't targeting small business owners or corporations.
Whose wealth harms society? What percentage of society would such louts be?
Their wealth doesn't directly harm society (unless you include wall street and their financial catastrophe, paid for by tax dollars).
Rather, the fact that their wealth is not taxed at an appropriate amount causes a rising gap between the top and the bottom (and really, the top and everyone else). The middle and bottom are remaining flat and even heading downward. We've got deficits, aging infrastructure, an education system that lags the result of the world, health care that is not accessible enough to those without a lot of money, and yet the top 1% hold more than a third of the total wealth. This would be bad enough if it was static and stable, but it's an increasing gap.
The goal of that proposal is not to prevent runaway wealth, but rather to encourage all to be productive. Whatever the number would be (17%, 20%, 23%, etc), a flat tax with no personal deductions can garner the same revenue at a lower marginal tax rate than our current system. This would let lower classes get the same tax benefits as the wealthy. They would win not by soaking the rich, but rather win by their own hand.
A flat tax does not address the exponential problem. Those with excess wealth have many times the compounding potential. Even a moderate boost in income results in dramatically increased compounding opportunity.
Consider an example:
John makes $50,000, and his expenses including taxes and everything are $46,000. He's got $4,000 left over to increase his net worth and seek a rate of return on his money.
Jill makes $70,000, and her expenses including taxes and everything are $50,000. She's got $20,000 left over to increase her net worth and seek a rate of return on her money. So, she makes 1.4 times the income of John, but her savings rate is 4 times higher than John.
Jack makes $140,000, and his expenses including taxes and everything are $90,000.
He's got $50,000 left over to increase his net worth and seek a rate of return on his money. So, he makes 2 times as much income as Jill, but his savings rate is 1.5 times higher than hers. And he makes 2.8 times the income of John, but his savings rates is 12.5 times higher than John.
Jane makes $3 million, and her expenses are $1 million. Her income is 21.4 times higher than Jack's income, and her savings rates is 40 times higher than his. And she makes 60 times as much as John, but her savings rate is 500 times higher than his.
Jenny makes $5 million, and her expenses are $6 million. She's an idiot.
Basically, there is a fairly inflexible "bottom", or minimal that is needed to survive and raise a family and live a modest life. People near the bottom (or under the bottom) have little or no ability to compound wealth. Any extra income above that, one can either be frugal or extravagant, or somewhere in between, and if they're smart about it, they will utilize a larger gap between income and expenses to derive a massively increased savings rate. (And the money they save, if put into cash, bonds, stocks, etc. will grow exponentially if they perform reasonably.)
This, combined with a regressive tax structure for those above a certain point, results in an instability in the system. Jane's tax rate will likely be the lowest of the bunch, depending on her line of business. At worst, she'll probably have the second lowest rate after John.
Business (eg, carpenters, real estate developers, banks, venture capitalists, landlords, investors, consultants, stores) is no straw man. It is the engine which finances everything society wants. Incentives should encourage business to do what benefits society, eg, provide goods, provide services, be competitive, hire workers, pay dividends, avoid crime, repay loans, pay taxes. Some tax policies are better at maximizing this mix of goals than others.
From wikipedia:
A
straw man is a component of an
argument and is an
informal fallacy based on misrepresentation of an opponent's position.
[1] To "attack a straw man" is to create the illusion of having refuted a proposition by substituting it with a superficially similar yet unequivalent proposition (the "straw man"), and refuting it, without ever having actually refuted the original position.
In other words, the majority of your argument has gone to the defense of small business owners, which I have specifically stated I am not targeting with my proposals.