Just want to mention that actual communism has never been implemented on any significant scale, the Soviet Union for example never reached communism, arguably never even really reached socialism.

Marx suggested that communism will only emerge after the failure of capitalism. Every single communist regime has ignored this idea.

While I agree that many countries who have followed communist ideas have done some horrible things, the same can be said for every other system, including the current system we have now.

Furthermore pure capitalism has never really been tried either, because it begins to fail and government intervention is needed very quickly.

Actual communism doesn't really mean dictatorship, I think we might see a comeback of ideas related to communism & command style economies in the future. Especially if we start implementing Strong AI to better manage resources and trade. I could see a future where free market may not exist in the form we have it now, instead there might be a system focused on harm reduction managed by various planning systems, better and more careful resource allocation, etc.

Let's not forget that communist ideas also allowed many countries to industrialize rather quickly.