Planet doesn't care about per capita

But unfortunately people, their self interest, and their politics do.

Its like saying it doesn't matter that the Coalition are dragged kicking and screaming along the renewables path. Yes progress is made, but it'd have been a whole lot more successful and easier if it was bipartisan. At every turn the Nationals especially have raised bloody murder over fuckin windmills.

So these people and their 'concerns', (only sometimes legitimate), have to be addressed and assuaged. Same with international relations, China might have to do a lot of heavy lifting, but they'll be sure to throw bags of rubbish over the fence if they feel like the rest of the world aren't pulling their own weights. It might be childish, but anger at those kinds of things tends to fester.