The lack of market economy definitely distorted the soviet economy in many ways, but none of them were really critical to its collapse. The planners didn't concern themselves with prices too much, which did lead to inefficiency, some products were too heavy because the producers didn't bother to save materials or were required to use all the materials for a small number of goods, some goods were too light and fragile because producers tried everything to reach a production quota with too few materials. It all lead to many laughable situations, especially as the planning stagnated once everyone knew it was a failure.
Yes, but in essence the reasons the economy (nearly) stagnated there were three:
1) End of increasing efficiencies through technological development in industry (the "west" had that too).
2) Lack of a
commercial services economy to "produce GDP" after that event. What the west achieved through the privatization of social relations, the soviets were reluctant to allow. Their was the more humane ideal there, imho.
3) The end of state-enforced hard-labor imposed on soviet workers. Let's not pretend that Stalin's economic development policy wasn't every bit as exploitative of workets as that of the most greedy western capitalists, towards the same goal of capital accumulation and reinvestment. The end of this left workets. eventually (the process took a couple of decades) virtually free to decide how hard they'd actually work. They still worked anyway, and the USSR was still getting many projects done in the 1980s (it was still second only to the US as a developed economy, though its huge size meant that infrastructure and transport, there as in the US, cost much more than in, say, Germany or Japan.
The USSR was, economically, successful. It's standard of living by the 1980s was very good, espe4cially compared to what it had been not so many years ago. The rise was amazing. Never mind the talk about stagnation then, Japan is stagnated now for what, 20 years, and no one is yet saying that it is a failure and must collapse. The "west" was dangerously close to continuing stagnation also until it figured out that creating new jobs in services which were previously not within the commercial realm was a way to solve its unemployment problem in the 1980s. And much has been said about the USSR not having led the way in the spread of domestic computers. So what, after a few years the west has already outsourced most of its manufacturing anyway...
The USSR and the "West" were roughly on pair, economically, right until the late 80s. The west had more diversity of each type of product, and better quality on the top, but the difference in the average stuff wasn't big, not the difference in the "way of life".
Nevertheless, I think the primary reason for soviet economic downfall was military spending, which was simply massive and crowded out social spending and consumer priorities, the productive sort of investments.
I disagree. The USSR could sustain its defense spending. The only way its military policy weakened stability was through its involvement in Afghanistan. And even that would not have been enough. No, it was Gorbachev's utterly idiotic management of his "Perestroika" that caused the collapse of the USSR. Not the military spending, and certainly not the economy.
I may well be out of my depth here, I haven't studied the later days of the USSR very carefully. But in my opinion the war in Afghanistan and then the
spectacle of a government that continually flogged itself with revelations of how nasty it had been in the past, which deliberately resurrected old conflicts... that was what left the USSR vulnerable to collapse, by
shattering people's willingness to fight for its continued existence. Even that would not have been enough, as (apart from the Baltic states) the people of the USSR were quite happy with continuing with the union. No, it also took Gorbachev the Idiot's total mismanagement of power politics to allow a coup which, with the USSR frail as it was, shattered it.