No labor should be taxed. That is theft. All these billionaires have a low tax rate due to them paying only capital gains. They also become billionaires due to their stock being pumped. The Fed along with their dealers and funds pump money where they see fit. Also the markets are not random, they own the machines and computers which set the price of every stock. Therefore they know what will go up or down before it happens. The best way is to have a currency backed by only labor. At the end of the day money is used to use someone else's labor.