Top 1% gains now driven by capital income

Since 2000, all of the rise in the top 1% income share owes to capital income (dividends, corporate profits, interest) rather than labor income, reversing the 1980s-90s pattern that was driven by surging executive pay; the mechanism is that high labor incomes were saved at high rates, accumulating wealth that generates returns that are themselves saved, compounding capital-income concentration.