The success of capitalism in those places is it’s ability to crush socialist movements before they have a chance to work and offload production on their peasant class.
Socialism has never worked because capital has never allowed it. or more correctly socialism has never been allowed to continue working.
it’s why America is still so butthurt over Cuba.
Socialism has never worked because dictators and authoritarians take control. It has weak protections against authoritarians, or authoritarians use socialism as a carrot to entice the masses and never delivering on their promise. Same with communism.
Fidel pisses me off so much. He achieved amazing things in the name of prosperity for all the people, then went and killed or imprisoned political opponents and LGBT.
However the continued sanctions against Cuba are blatantly in place to make sure socialism doesn’t “work”.