Who knew? From Ovidiu Tanjala at mises.org:
Ludwig von Mises wrote Socialism: An Economic and Sociological Analysis, a small book published in 1922, which demonstrated that economic calculation in a socialist commonwealth is impossible. Of course, Mises assumed that the purpose of an economy, even a socialist one, was supposed to produce goods and services, which determined its success or failure.
Alain Besançon wasn’t an Austrian or a Misesian, but he wrote Anatomie d’un spectre: l’Économie politique du socialisme réel, also a small book the size of Mises’s own Socialism, in which he also observed that the Soviet economy couldn’t perform economic calculation; thus, the Soviet economy performed poorly, very poorly by Western standards.
The Soviet economy was wasteful and chaotic. Besançon believed that economic planning induced irrationality in the system. Terrified managers couldn’t report failing the plan, and consequently any subsequent economic planning would be even more divorced from reality than previous planning had been.
Both Besançon and Mises knew that socialism could not discover market prices. Both knew that this would lead to widespread corruption. However, Besançon realized that the state not only tolerated but also used the black market for price discovery in economic sectors critical to the regime, like defense and certain prestigious cultural and sport endeavors (Bolshoi Theatre, gymnastics, eventually hockey, etc.).
STRAIGHT LINE LOGIC 
It also burns down existing systems and opens up a period of chaos or opportunity to the comrades that is never wasted.
Utopia for apparatchiks and state minions, not so much for the rest of society.
“The purpose of socialism is communism.”
Vladimir Lenin
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