Not going to happen in a proof of stake system. That's the whole problem with proof of stake. It's just rich get richer and have more power. Period. And you can't find a PoS system that is NOT like that. I have worked in a few of these ecosystems at this point, and they are all the same, nothing but a popularity contest or let's pool our stake with the people that already have the most, so we can earn more!

The space has lost it's way and really doesn't care about decentralization anymore for the most part, other than a few hard core cypherpunk communities like the Monero community.

The solution is and always has been proof of work. Period.