2. Laws are enacted or kept that favor these companies. Like the the tax loophole that, combined with intellectual property laws, effectively gives these companies huge tax discounts globally.
https://www.reuters.com/article/us-usa-tax-checkthebox-insig...
3. The US uses it power to force countries to sign agreements on or enforce e.g. intellectual property that favors US companies.
https://www.thelocal.se/20060621/4128