Climate change is gonna be really expensive. Some people have tried to point this out.

The problem is liability, to an extent; if you imagine a perfect market system, then maybe it would fix climate change; the parties responsible would be on the hook to pay for their externalities, so would be incentivised to stop producing them. In the real world, ah, not so much, though I do wonder if we'll see insurers/reinsurers attempting to sue big CO2 emitters in the near future.