" In the early years, top incomes were derived from capital, and the richest people were what Piketty and Saez call “coupon clippers,” who received most of their incomes from dividends and interest. The fortunes underlying these receipts were eroded over the century by increasingly progressive income and estate taxes. Those who used to live off their (or their ancestors’) fortunes have been replaced at the top by earners, people like CEOs of large firms, Wall Street bankers, and hedge fund managers, who receive their incomes as salaries, bonuses, and stock options. Entrepreneurial "

― Angus Deaton , The Great Escape: Health, Wealth, and the Origins of Inequality