Marxists aren't, or shouldn't be, dogmatic. It's the method that they uphold. Plus, Marx didn't live to see the USSR, China, Cuba, etc, so it's not possible to know whether he would maintain that position (taking your claim at face value).
Marx stated, that capitalism is a necessary step in the evolution of economy, and is better than anything before it and worse than communism. So the real question is whether he would have considered the aformentioned countries as ones that achived communism.
As far as I know even Marx said so.
Marxists aren't, or shouldn't be, dogmatic. It's the method that they uphold. Plus, Marx didn't live to see the USSR, China, Cuba, etc, so it's not possible to know whether he would maintain that position (taking your claim at face value).
Marx stated, that capitalism is a necessary step in the evolution of economy, and is better than anything before it and worse than communism. So the real question is whether he would have considered the aformentioned countries as ones that achived communism.