You missed the point -- proof of stake is more likely to become centralized than proof of work since now you don't have to buy computers to own the network, you

You missed the point -- proof of stake is more likely to become centralized than proof of work since now you don't have to buy computers to own the network, you simply buy the coin. It's much easier to acquire a million ETH than it is to acquire and manage the equivalent value in computers. Even accounting for liquidity problems in acquiring ETH, the supply problems for hundreds of thousands of computers are probably worse. My point is even stronger with pseudo-centralized consensus like proof of stake.