Those power dynamics are part of the human psyche. The will persist and be present under any alternative you care to impose.
Why stop there? Why have systems or government at all? Why even bother making murder illegal? After all, it's human nature. After all, it's just how life works. After all, the strong win, and the weak get eaten. Everyone knows that.
The point is not which system gets rid of these, in my opinion, permanent aspects of human nature, but which one results in the best outcome despite them.
If the belief is the collectivism deals with these issues better, that’s wonderful. But I never hear that, instead, I hear that not-collectivist systems are the one and only cause of these systems, and that only collectivism will solve them. And I just don’t believe that’s true, and I think we have lots of historical evidence of societies that tried forced collectivization and failed.