1. What does investing in the stock market do for the company except, if purchasing shares in that company is done with the market, increase the value of that companys shares? The majority of issued shares available on the market aren't new issues to raise capital for reinvestment, are they?
2. Where does the money earned from dividends and capital growth go if earned by very few individuals, especially if reinvested straight back in? What contributes to the economy more, 1000 people buying one loaf of bread each or 1 guy buying 10?
I've seen the %age of tax paid by the top x% of earners being greater than the bottom 50% used as a positive argument. That confuses the hell of out me.
1. I think it is time to look into wikipedia, you're asking for a lot of information and I'm not a financial advisor, just a guy with a 401K.
2. What contributes to the economy more, 1 guy buying 10,000 loaves of bread or 1,000 people buying one loaf of bread each? Our hypotheticals are very hypothetical.
3. That one is very much in the eye of the beholder. On the one hand, most taxes being paid by top earners can be viewed as them already paying their fair share and largely funding the government functions that benefit everyone. On the other hand, isn't it a shame that the distribution isn't more equitable so lower earners are still earning enough to contribute more as a percentage to tax revenues.
I think Jonathan Haidt's values research is helpful here. It's not about economics, it's about differing value systems. Haidt's moral dimensions (he's up to six now) are related to political ideology, and are (briefly): Care/No Harm, Fairness, Loyalty, Tradition/Authority, Purity, and Liberty. Liberals value Care/No Harm and Fairness significantly more highly than the others, conservatives value them all roughly the same (but their highest is Care/No Harm, although it's emphasized less than in liberals), and libertarians value Liberty significantly more highly than the others. Remember these are moral values, the liberal thinks it's wrong to weight respect for Tradition and legitimate Authority equally with Fairness, the conservative thinks it's wrong to place Fairness over Loyalty, the libertarian thinks it's wrong to place Fairness or Tradition over Liberty. All three political positions value all six dimensions, so it doesn't mean that a conservative doesn't think Fairness is important, just that they are more likely to place the weight of, say, Loyalty and Tradition/Authority as just as important, likely more important if they're combined. It's not the economic calculations that divide us, it's our basic moral stances.
The key to Getting Things Done is to focus on areas where these values can be aligned between the different groups, which isn't necessarily good because it can merely represent effective manipulation: Hitler was able to combine a sense of outrage over the unFairness of Germany's position with Loyalty, Tradition/Authority, and Purity to override a nation's instinct to Care for others and do no Harm. OTH, FDR was able to combine multiple values to mobilize the USA in the effort to stop the Nazis.
At the grassroots level, you can get broader support for measures that appeal to multiple values. If you can get six-for-six (hard, because they easily conflict), you've got a winner.
A simpler coalition: liberals and libertarians for same-sex marriage. Conservatives oppose it due to weighting Loyalty (ingroup), Tradition, and Purity together more highly than Fairness by itself. Liberals think it's only Fair, and libertarians consider it a matter of Liberty. In fifty years the conservatives will mostly be on board, because by then it will be probably be Traditional and gays less of an outgroup, so it will become a wash for them (and they'll probably use it as an example of how tolerant conservatives are).
For what it's worth, I just think the man is on to something, and it's worth knowing why certain things seem to always end in an impasse...some things we're never going to agree on unless our value system changes, and that is a very gradual process, IMHO.