Too Long; Didn't Read
PoW and PoS blockchains lead to plutocracies, where those with the most money have the most voting power. This means that poorer individuals lose their voice. The solution to this is to find a way to run a blockchain that does not use processing power or money as a metric for distributing votes. This is what the proof-of-person blockchains are focused on doing, with the aim of creating fairer decentralized systems.