Because of the "greed" factor. Communism worked fine on this Continent for 26,000 years until the "greed" factor was introduced. Never enough to be satisfied, take it away from others so that it can be shit canned because it was allowed to "spoil". Just so wrong and we will still be around long after this premise is extinct.
If I disappear from a discussion please forgive me. My 24-7 business requires me to split mid-sentence to serve them. I am not ducking out, I will be back later to catch up.