A little thought experiment.
Say for whatever reason, Greece goes Communist, and spends the Cold War era in the Soviet sphere of influence, then democratizes and implements free-market reforms in the early 1990s.
When you compare the utter economic disaster in Greece today, and the fact that it will take many years to recover, and the fact that Greece is now behind some post-Communist states (Poland, Lithuania, Estonia, Hungary, and Slovakia) and barely ahead of Russia itself in GDP PPP per capita, combined with the fact that Greek governments would never have had the chance to idiotically borrow loads of money while tolerating Olympian levels of tax evasion and corruption, as well as the fact that it has great potential for economic growth due to it's location as a port hub and tourist-luring sites, would Greece have been better off today had it been under decades of Communist rule?