The two largest blockchain are PoW. XRP, Cardano, Polkadot, the next in line by marketcap, are PoS. It is also somewhat misleading to portrait Ethereum PoS has

The two largest blockchain are PoW. XRP, Cardano, Polkadot, the next in line by marketcap, are PoS. It is also somewhat misleading to portrait Ethereum PoS has an eternal promise without acknowledging that real, significant steps have been taken in the last year towards - the Beacon chain launched and thousands of ETH are locked up semi-permanently, withdraw-able only on the PoS chain. Finally, importantly, users of a PoS chain do not have to defend a PoW if they prefer not to, much in the same as you can eat Vegan food despite the CO2-cost of the environmental impact of meat production.