Any sort of proof of stake or weighting of power is game-able and abuse-able. Even 1 person gets 1 vote just results in a black market of people exchanging theirs for some other thing of value. It always comes down to a division between those who "have" and those who don't. Even simply having more power through length of time invested creates power dynamics.

That doesn't mean that things can't get better or we shouldn't try, but it does mean that it's something that can't just be waved away with magic phrases.