Yes, actually it could.
Actually it couldn't. That was abundantly shown when the USSR fell and Russia's subsequent domestic needs were met by imports and are still met primarily through imports or imported factories.
Also, the tank factories weren't called "Kharkov Tractor Factory" for nothing![]()
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Don't confuse propaganda with reality.
Unlike the Chrysler plants which turned out tanks and bombers, the "Kharkov Tractor Factory" and it's like weren't originally consumer goods production lines switched to military production for the war effort.
Seriously, the Soviet consumer market was absolutely starved for goods and would have no problem swallowing any amount of production released by cutting arms race.
And, I'll once again point out the fact that the USSR industrial production system inherited by Russia after 1989 totally failed to meet that huge demand and still cannot meet that huge demand.