With proof of work you have economy of scale working in your favor. You'll get different deals on asic, power, server farms, etc. the more you buy. PoW by desi

With proof of work you have economy of scale working in your favor. You'll get different deals on asic, power, server farms, etc. the more you buy. PoW by design leads to centralization and we can see it happening live with bitcoin mining. At least with proof of stake there's no economy of scale. Everyone can participate fairly easily.