I also think that the concept of failure needs a little attention, I mean you could argue that democracy failed too, it's supposed to give everyone an equal voice in the system and yet rich people have an incomparably stronger pull on elections and therefore decisions.

I would argue that humans value collectivism more than individualism, the last few centuries would see to go against this notion but for most of humanity we have lived in close knitted communities and valued our dépendance on each others. Even now the most individualist and powerful human would die in matter of months without help from the community (think of the water distribution and sanitation, no water = no food = death).

Thank you for arguing your point though, I appreciate it and it gave me very much food for thought, I'm not even denying that communism failed, it did, it has had its successes but it mostly failed it's purpose, as did democracy. One of them pulled it off better though, of course democracy.