Rule 1: International trade deals forbid offshoring of manufacturing. Example, cars from Ford can't be made in Mexico for 1/10th the price. This is universal and enforceable by dissolution of companies that don't comply.
Rule 2: Stringent regulations to prevent Tax and location based gaming of Rule 1. Ford doesn't get to pay taxes in Tahiti, incorporate a mailbox in Mexico so they can make their cars there, but take advantage of US infrastructure for the rest of their business.
Rule 3: Companies reaching a monopoly size will be broken up into relatively equal sized companies, importantly those companies will be competing in similar regions. It's not like AWS and Amazon. It's like two Amazons. I'm sure figuring out the codebase and IP will make many jobs for lawyers and engineers. Maybe less for the MBA's.
EDIT: For rule 3 I forgot to add that the break up forces innovation as similar companies are competing now in the same market. It's an engine of growth built into the system.