Rich people get their income typically as capital gains, and I expect the income brackets above are given for earned income, which is a different thing. It is

Rich people get their income typically as capital gains, and I expect the income brackets above are given for earned income, which is a different thing. It is not really feasible to tax capital gains with a progressive system. You can make a small case for progressive taxes on capital gains by allowing a basic deduction, but the transaction cost of moving the capital gains somewhere else are generally quite small. (Just for information, I live in a country from where people are leaving as tax refugees to Sweden).