I would argue that the economic system wasn't badly planned but perfectly planned (or evolved).
It's the epitome of an efficient funneling of wealth towards the top in a wormhole-shaped way.
It just sucks proportionally downwards in the same way.
the soviet union hasn't existed for like, 33 years. You need to wake up. In fact I think you need a mirror, because you are so knee-jerk reactionary with needing to engage in a nationalist either/or narrative here that you are making it up for other people out of wholecloth.