This sounds like a naive response to a fundamentally flawed system. The EU ETS has been a failure from the beginning. Commoditising pollution just leads to more

This sounds like a naive response to a fundamentally flawed system. The EU ETS has been a failure from the beginning. Commoditising pollution just leads to more abstractions and opportunities for fraud, laundering and lack of accountability. It takes the onus away from government regulation and puts it in the hands of the market whereby those most responsible for pollution already have enormous agency to influence market outcomes in their favour.