If you go by net income on a tax return, or by taxes paid, none of the companies you're talking about are American at all. 0%. You're also misunderstanding th

If you go by net income on a tax return, or by taxes paid, none of the companies you're talking about are American at all. 0%. You're also misunderstanding the effects and purpose of breaking up larger companies, which are: to restore and increase competitiveness.