Please correct me if I'm wrong, but my impression is that this is not something that "both sides" are equally responsible for. In Canada/US, conservatives/Republicans generally refuse to implement a carbon tax; whereas the center-left and left parties generally do. Additionally in the US, the Republicans don't even believe in climate-change.
Hence Chomsky's argument that the Republican party is the most dangerous organisation in human history: https://www.independent.co.uk/news/world/americas/noam-choms...
So I agree we need carbon tax, but I find it frustrating to pretend this is a issue both sides are at fault for.