Yes, there isn't a clear divide between "first-world" and everyone else anymore. That being said, I think the wealthier countries that are more industrialized have a debt to pay with regards to climate impact given that they were able to develop and build before mainstream awareness of the issue, and virtually all of the accumulated pollution today is therefore due to these industrialized nations.

I'd like to see a period in which China, India, and smaller nations are able to use more than their share of the global quota while the wealthier countries in western Europe and North America use less, per capita and in sum.

What is rich actually? I still don't understand how can an entire nation be rich without someone (immigrant) or machines doing your job.. or access to latest gadgets? but i still see people struggling to pay for education, finding jobs is extremely difficult etc.. people are still low/middle/upper irrespective of the country. there are several developing nations where people don't have so much struggle to live.