Normally that level of coordination is impossible among different companies, at least some would keep prices lower to retain customers.
The biggest con in the world. You would think people are not capable of organizing for a common cause.
That level of coordination IS possible when all you need is a bunch of CXOs and investors in a union.
You think collusion to keep prices is not possible? Does that people people agreeing on a specific set of laws and policies living in a demarcated region (a country) is not possible?