The incredibly rich already have many options available to avoid paying taxes. The concerns you raise are valid, but there might be ways to address them, perhap

The incredibly rich already have many options available to avoid paying taxes. The concerns you raise are valid, but there might be ways to address them, perhaps by taxing different categories of items at different rates (or perhaps changing the sales tax by price). Maybe 3% sales tax on groceries, but 30% sales tax on automobiles over 50k for example.