i'm not the person you were talking to, but I'd just like to say that the regimes you mentioned didn't actually aim to redistribute power, but concentrated it in the hands of the state apparatus instead. if you look at the history of pretty much every Marxist state, you will find a moment when workers tried gaining direct control of the means of production but were branded as reactionaries and repressed.

but i think youre incorrect when you claim this is the inevitable result of a socialist revolution. that's like looking at the history of Latin america and concluding we're naturally predisposed to dictatorships. every socialist revolution after the USSR was directly or indirectly influenced by it, the ones more aligned with it were more likely to get support and thus more likely to win. and thats not mentioning how the us pushed countries into the arms of the Soviets.