I think the problem is not with the complexity of the tax code, but that those taxed by it have significant incentive to avoid paying taxes, and have the ability to manipulate information such that they can pay less.

No matter how you slice it, if government taxes "income", and your business is set up such that you decide what your "income" is, you can control how much tax you are bound to pay. The only way around it is to make people think that spending more money on more government is a good and sensible thing to do. Or perhaps that spending more money on higher employee payroll is a good and sensible thing to do.