I lived through it. We can talk a lot about, but the fact is equality doesn't work. Maximum it gets to is everyone equally poor. And as a result of it there are no startups. You need middle class for this and motivation. Government controlled and own monopolies is also the result of equality. Nobody else has the resources. So commies had to create the economy, few bigger things are easier to manage. Managers aren't interested in risk taking, it's not worth it. Finally everything stalled and fell far behind the rest of the world. There were bright spots, but that's it. Like North Korea today can build missiles and not much else.
Just look around. Probably only Cuba and North Korea are still in true socialism. In both there is a small super-rich class and the rest is, yes, equally poor. Super-rich are pretending to be poor too and invent theories to keep the rest under control. BTW, I'm not sure Cuba still has strong ideology today.