You just need to look.
https://www.engadget.com/the-morning-after-cryptocurrency-ma...
https://www.engadget.com/the-morning-after-cryptocurrency-ma...
Point is, whether it is a huge farm of ASICs or PoS holdings, it still leads to centralization.
So given the context, I was implicitly asking for what distinguishes Proof of Stake from Proof of Work to make the former centralized where the latter is not.