Nationalized industry sucks. Every time we try it, ultimately we get worse off. But if you're saying that we need to have a carbon trading market or some other such strong regulation that includes externalities, yes we definitely should. In the US, conservatives used to believe in market-based approaches to solving big problems. Now they just deny the problems exist. This is the mindset of a child, not an adult. Grown ups own their mistakes and solve the problems, they don't point fingers and deny they exist.