Plus replacing POW would be very stupid. Ethereum might learn from this, the hard way.
Shower thought. If Ethereum POS wouldn't be enough to secure the billions in their blockchain, and not enough to secure it as a global base layer for tokens, I believe they will probably need Bitcoin to secure their blockchain, and that probably creates more and more demand for Bitcoin transactions when block rewards become less and less after each halving.
When you analyze an altcoin like Ethereum you should have one eye on all of its aspects instead of just focusing on the algorithm that changed from PoW to PoS. In this case the most important attribute to consider is Ethereum's centralization. That has helped this shitcoin survive a lot of things and the only reason why they switched to PoS and has been able to keep this mutable blockchain alive is because it is centralized and they have a lot of control on it.Shower thought. If Ethereum POS wouldn't be enough to secure the billions in their blockchain, and not enough to secure it as a global base layer for tokens, I believe they will probably need Bitcoin to secure their blockchain, and that probably creates more and more demand for Bitcoin transactions when block rewards become less and less after each halving.
In other words if a decentralized coin does the same, the effects won't be the same at all.