If you're comfortable in the European and Russian history, then you would know that it did work in many aspects!
1) It modernized the country in the industry and politics. What they performed was a forced shift from an economy based on agriculture to an industrial one.
2) It "freed" the population from the land completely, and first the party managers, and now capitalist oligarch can rule them by wages.
3) The zone of interest of the USSR expanded to reach even other continents, and even our huge satellite, so one has to admit it, that this is no little accomplishment for a country, that was ruled by Father Tzar not even hundred years ago.
This is no small feast for capitalism because after all, by all means, it was explicitly capitalist country since the '20s, and even before the policies were that of a failed war-economic ones. Capitalism doesn't need free market, in fact, it only holds a certain illusion of "free" market anyway. Free markets in capitalism are always deemed to transform in to monopoly playground, which seizes the political system. In the case of the USSR however, it was the inherited bureaucratic structure that produced capitalism where there was little. If you take your time, and look up the ideological genealogy of Bolshevism/The Communist Party, you'll find that in fact, they were no more than a rather extreme version of social democracy, and communist/anarchists/radicals of all sorts were systematically eliminated, imprisoned, forced out of the country. Stalin's re-interpretation of Marxism-Leninism (that this radical social democratic theory, the top-down approach to the working class and communism as a Party led process, instead of a revolutionary movement) were only slight changes, in order to make the Soviet-Russian imperialism "acceptable", as the USSR external image as the agent of internationalism (which is, in many ways, just the same ol' lie creepily similar to the USA's line of bringing about liberty and democracy - both means that expanding the zone of military-political-economical interest).
For all intents and purposes, the USSR produced super-wealthy class, who at some point dissociate themselves from the ideological facade, broke away even from the illusion of managing this wealth in the name of the people. Economy isn't something of being good or bad. It is a tool in the hand of the powerful. In economic crises it is always the most wealthy who survives the transformation, those who actually create policy... economic policy.