All of the examples you gave were either catastrophic failures or countries that are now gravitating away from communism.
Socialist democracies have a competitive advantage in the global marketplace, so countries with competent leadership are choosing that particular form of government. Too bad there is no competent leadership here in America. Maybe some day.

I am absolutely certain that using my money responsibly makes a difference. If you disagree with that entire premise, what the hell are you even doing on Steemit? Seriously, you use your money to support people that you agree with, and you flag people that you feel deserve to suffer consequences for being Nazi scumbags. (Awesome job flagging that Nazi btw. I can point you in the direction of other Nazis if you want to flag some more.) My point here is that you are using and participating in a form of capitalism right here, and that proves capitalism is a tool that can be used for good.

"Be the change you want to see in the world." Gandhi