Although authorities periodically attempted crackdowns, their ultimate targets were themselves highly placed party officials. Brezhnev’s own family was deeply involved in the black market. Many observers mistook black marketeers for proto-capitalists. However, when the fall of the Soviet Union in 1991 took with it the state-planning system, they evolved not into entrepreneurs, but into large-scale criminal racketeers who throttle the economy today no less than state planners once did.
http://soviethistory.msu.edu/1980-2/underground-economy/
So just like here?