Let's be real, this won't be solved by reducing consumption, only carbon capture technology (likely well into the future).

It's in no nation's interest, from a game theory perspective, to stunt their own growth to reduce emissions. If the US stops, Russia and China will destroy the west. If China stops, they'll never catch up technologically. Ditto for India. Smaller nations have even less incentive (they'll easily be conquered by neighbours), except for the ones surrounded entirely by friendly nations...