You seem to parrot a take that is popular these days in western internet ("cApiTaliSm bAd!!1"), but let me tell you as someone born in USSR that quality of everything starting from simple things (shoes, etc.) to complex things (cars) was atrocious. The problem with modern software quality is very simple - no one is going to buy stable and polished iPhone app for 500$ when there is bunch of similar apps that may have some bugs and even crash once a week but cost 5$ (or even better cost 0$ and contain ads).
It seems you are confusing USSR with China. There was no "Authoritarian State-Capitalism" in USSR, no free-ish market with some level of competition, no entrepreneurship, no shareholders, no nothing and yet somehow car quality was significantly inferior to Ford, BMW, etc. and TVs were much worse than Sony ¯\_(ツ)_/¯
Arguably, Soviets were prioritizing military production (up to 14% GDP going to military in the 80s), and everything else was an afterthought. They didn't need to give population quality cars, as they could just send them to Gulags if they bitched about the quality too much.
