The military is always given priority in food, and the people get what is left over.
Some argue that the Communism that the USSR had was not the same as Marxism.
I had a Russian coworker once, he tried to quit smoking. He had smoked US cigarettes and he switched to Russian cigarettes because they tasted bad and he claimed having bad tasting cigarettes helped him quit. Something about Russian quality control not being as good as quality control in the USA.
But as AI, automation, and robots improve, they will do the jobs of human beings and put most of us out of work and then there will be a basic income to live on. Perhaps that is when Communism works when the technology does the work for us and doesn't need any motivation to work better.
No, because you still have the fundamental problem that broke Communism (and which was identified by von Mises and others in the early 20th Century): the calculation problem.
https://wiki.mises.org/wiki/Economic_calculation_problem
This is not a solvable problem. Creating an 'artificial market' is akin to predicting the weather in great detail 75 years from now. You might, might be able to say "it's likely to be a bit warmer on average", but you could certainly never say "it'll be raining at 11:00 that day". It's simply impossible.
If you have unlimited renewable energy, self-driving electric vehicles, IBM's watson providing clinical expertise instead of doctors, etc, you could provide socialism without taking from people (because labor no longer has value compared to software and automation).
Assuming unemployment will increase as production becomes more efficient across a wide variety of industries, I would not be surprised to see expanded forms of segregated economic systems implemented, similar to electronic food stamp type systems, maybe for basic income. Credit card data along with other sources of resource consumption records would easily make forms of central planning easier. To some extent, think tanks and hedge funds likely are already attempting to predict resource allocation but unfortunately it seems someone has come to the conclusion that frozen yogurt facilities should be in high demand rather than education or housing.
I imagine China is making somewhat of an attempt at centrally planned economic calculation.