If someone has a Billion Dollars, I think there's a number of problems and system failures. First off, likely their company was never properly taxed. You know, billion dollar profits and paying zero in tax, a trick many Fortune 500 companies pull. Second they're not paying a high enough rate of personal income tax, and a wealth tax could adjust that without changing their lifestyle one bit. Third, billionaires have too much money and power to be able to buy politicians, and distort our political system. Fourth, almost certainly their workers were underpaid, as corporate profits went to the executives. So you get things like Bezos inching toward trillionaire status, while Amazon warehouse workers struggle on low-pay and have to work through the dangers of the virus. Or Walmart employees needing food stamp assistance just to feed their families. Billion dollar owners with workers supplementing their pay with gov't assistance to the poor.
Americans have worshiped wealth for far too long. We need more of a we're all in it together approach. Under-taxation, especially of companies, has meant there is too little money to help average people. America is super-rich and there's no excuse for homelessness, a lack of social services and drug treatment, 40M without health insurance, large pockets of poverty, poor schools, crumbling infrastructure, etc.
Time for the USofA to get its priorities together.