Equalitarian experiments on 3rd Density worlds almost invariably run amuck, as the actions of the group never follow the ideal. All to work equally hard, according to their talents falls under the intractable laziness that is natural to all without a strong sense of responsibility toward others. This is the majority, on 3rd Density worlds. Thus, when on the honor system, less and less gets done by fewer and fewer individuals. Add to this the ideal that the talented or accomplished are not to boast or receive reward for their endeavors beyond what the least of the group receives. Motivation to contribute is countered when the lazy in the group are all about, doing as little as possible. Rules against benefiting at the expense of others falls to bribery, and a black market system evolves and thence essentially rules the economic system, as it did in Russia.
Communism failed as mankind was not ready for the system, not because the ideal is not worthy. Service-to-Others groups operate with what might be construed to be Communistic ideals - all sharing the assets of the group and cared for by the group, regardless of their contribution. The difference is the spiritual maturity of the group, as where all care for the group's outcome as much as they care for themselves, the system works. Communism as a concept has been introduced into human society repeatedly, and in fact can be found as a family concept in most households. It goes by different names but the theme is the same - one for all and all for one, united we stand where divided we fall, the family that prays together stays together, and do unto others as you would have them do unto you. Nothing wrong with the ideal, just make sure everyone in the group is as dedicated as you.