Recent history shows that there's no holding previously backwards countries from advancing their consumption. As Russians joke, the global famine will come when the Chinese start using forks.
China, India and SE Asia are quickly upping their per-capita production and consumption of carbon-heavy goods. Brazil doesn't destroy Amazon out of spite.
We have no moral right to say "Nonono, you can't do what we did in the 20th century and live like us!".
