PoW will have to be banned by every country , no country has the resources to power 2 earths worth of energy drain.
Have you checked the
carbon footprint of the current financial system? You keep trying to convince us that PoW is so futile, but fail due to lack of valid arguments. You also choose to support PoS by degrading PoW. And I repeat: It has a strong reliance on renewable sources in contrast with almost everything else. That's due to the incentive of the miners to get away their expenses.
In other words, the system incentivizes you to not harm the environment for the common good.
Because by having a financial incentive to run a full node, you guarantee that every transaction since the genesis block is attainable by anyone.
But, why should there be a financial reward for this? Isn't your business to want or not want to confirm you have the correct chain; to verify the transactions? The reward for your contribution is the privacy you gain.