Sure, and become permanently controlled by the founders, who control 60% of the outstanding supply. Proof of Stake enables any party who at any point controls

Sure, and become permanently controlled by the founders, who control 60% of the outstanding supply. Proof of Stake enables any party who at any point controls more than ⅓ of funds to rewrite the chain from that point forward, so this is an objectively terrible idea from an engineering perspective.