> t's governed by whomever has the most power and the biggest stick. These entities act in their own best interest

Everyone acts in their own interests. The gilets jaunes were a grassroots protest against a gas tax increase. You see similar gas-station sticker-shock pressure exerted by voters in the United States.

There are coordination problems to climate change. But it's less a prisoner's dilemma than a time-horizon problem: the fruits of a green transition won't yield for decades. (Economies of scale help with this. Geopolitical decoupling gets in the way of that--this is the only domain where I see the prisoner's dilemma that you allude to.)