Most of the poor pay 0% tax. A company is mostly just a collection of assets, and many of them can move their operations from one country to another if they're motivated to do so, you can't just say "this company belongs to the US federal government". If you want capital to permanently leave the US, then start jailing executives anytime they structure a multinational company. If you'd like them to structure their companies in a way that benefits the US, then implement an internationally competitive tax structure.