I don't think our system was really designed with a maximum corporation size in mind, though it's irrevocably pretty safe to say the system wasn't designed to i

I don't think our system was really designed with a maximum corporation size in mind, though it's irrevocably pretty safe to say the system wasn't designed to include many of the public policies that allow such large corporations to stay in business. Take away tax breaks, subsidies, and the concept of "too big to fail" and I can't imagine companies could ever get to the size of a modern auto manufacturer, tech company, bank, etc.