[JamesLefrere]

Ethereum made the switch from PoW to PoS in 2022. It was called The Merge https://ethereum.org/roadmap/merge

It’s unlikely that Bitcoin will ever do the same, for the same reason Ethereum was created separately in the first place: they (BTC community in general) don’t want to add or change anything, because they perceive that as diminishing its value. Oh well.