> All but one of the rest of your theories are illegal everywhere The definition of "monopoly" varies widely even within the USA, and enforcement of antitrust

> All but one of the rest of your theories are illegal everywhere The definition of "monopoly" varies widely even within the USA, and enforcement of antitrust issues generally depends on who has political power. If a company has market control and is monopolistic, but no one with power actually prosecutes them for their behavior, then is what they did actually "illegal"? Whether something is legal depends on both the written law, as well as how it is enforced.