The USSR didn't have the advantage of getting all the manufacturing supply chains in its soil funded by customers of the products it produced.

If there's one thing China learnt from the USSR was on how to be part of the globalisation push, and get as an advantageous of a position as they possibly could, in that the CCP has been very successful.

We will see if the shift to more authoritarianism from Xi will unwind that but China's future, with all its issues, is starting to look brighter than whatever the USA has become. Perhaps limiting the influence of the finance industry has a much better long-term prospect, it's very much one of the major flaws of the American system leading from the 1980s.