That sounds like a no brainer. I'd be interested in hearing the other side of this argument.
The point being that many countries simply can't afford to do their 'fair share' today, and if it's going to be done globally, wealthier countries will have to pay more.
I'm too lazy to Google up the annual budget of all the nations on the entire planet, but I have a suspicion it's fraction of the cost of doing this infrastructure overhaul.
They also produce fewer green house gasses... and it would make sense that more money would need to be spent where those gasses are emitted (ie: not in poor countries).
And they use less energy, which means fewer plants that need to be replaced.
In the summary [0], it says they think spending needs to increase from 3.4T/yr to 6T/yr... a 70% increase.
I think a more accurate estimate would be to take current spending in India, and increase it by 70%.
That would mean the US would shoulder a much larger portion of this increase.. Which makes sense, since we're one of the largest emitters of green house gasses.
Or maybe by share of total carbon produced historically?