

I don’t like command economies but they can work. The USSR made the mistake of basing a lot of their government, academia, and economy principally on ideological purity. For example the collective farms should have taken decades to implement with regional studies, test farms, and slow conversion of the existing farming infrastructure to collective farms. Move fast and break things does not work in agriculture and other critical infrastructure. If the Soviets (especially during Stalin’s time) had done their command economy differently they probably would have had a lot less famines early on.
Authoritarians really suck at running countries! Something about an individual or small group with no expertise and a violent hatred of constructive criticism making arbitrary decisions doesn’t seem to work out.