The rich should be encouraged to invest in job creating ventures and after their investments and job creation then be taxed on the balance of their income at a higher rate. The best way to do that is to eliminate the tax loopholes that allow them to avoid tax legally by using a flat tax that applies to ALL purchases that have a higher tax rate for non-essentials at a luxury tax rate. This would provide a progressive tax they couldn't avoid and eliminate tax on their investment in society taxing through a rebate system.