Well there are/were many ‘real’ communism implementations of closed societies. While you’re right that there are no ‘free markets’ experiments, just some bad Crony Capitalism.

How many of those "closed societies" were implemented as such because of direct actions by the US and other larger powers?

Cuba, Guatamala, Vietnam, and North Korea all seem to have been led by people who were very sympathetic to "open-ness" until the CIA got involved.