Short answer: It does not work.
Longer answer:
- The Communist ideal of a truly socialist system requires a government controlled economy.
- The Socialist ideal is that all persons get what they need and all people give all they make
- In practice this system wont work and attempts to MAKEit work mean that the government has to have total power over production and peoples lives.
- This leads to massive inefficiencies and massive corruption.
- The end result is a system where the government is a hugely unjust Dictatorship and the people are worth nothing.
- A good Example is the Russian Communist Party was quickly taken over By Stalin as dictator and ended with a complete collapse of the Law and Order. There was no measurable "Ideal Socialist Period".
Last: The Socialist ideal is shown to not work but the Socialists idea that all people should be supported in a way that is humane is embodied in most countries as Welfare, Minimum levels of health care and other programs to insure that the disadvantaged are not abused and have the opportunity to improve their situation.