Had another country had a primary role in inventing the internet, they would probably have it (or more likely, the US would be .gov.us and everyone else would be whatever they are today).
I don’t understand this argument. Are you saying the internet should be organised in a way that benefits the US, even if it is confusing for people in other countries? By your reasoning, it would make sense for .com to be US-exclusive because the US had a primary role in inventing the internet. Let’s pause to ask ourselves “what is an actually good system?” instead of “how can we justify US privilege?”.