The interests of the rich and poor countries just don’t converge on this issue. The poor nations are not going to forego using cheap fossil fuels to energize their economic growth unless the rich states agree to fork over huge sums to them annually. And the rich countries aren’t about to give hundreds of billions to corrupt governments in the developing world, particularly when many of the latter are declining to make any commitments until they see the money—and are refusing to let anyone monitor and assess whatever commitments they do make.
So there will be a big flop in Paris this time next year. And then the climate-crisis circus will roll urgently on to still more venues in the years after that.