Migrate to history as needed.
The USSR was a Neoliberal Social welfare state. It privatized everything under Lenin. I just wonder to what extent this mattered. What percentage of the firms privatized under the New Economic Policy (NEP) were renationalized? If you say 100% give a specific source? Was anything besides certain materials industries nationalized?
Based on my research (history.com). Not very much.
Henry Ford opened the first Soviet car plant. The car companies after that were partnerships with Fiat and other Western companies.
From Reddit. The Soviet central bank lent money to enterprises, which in practice did not have to follow any central plan.
Even though Russians were prevented from owning businesses, western capitalists had no problem making profit sharing agreements (based on this Wikipedia article).
The last concession contract was concluded in 1930. Foreign investments were replaced with work contracts concluded with western companies and professionals