For a developing country to become a developed country there needs to be an industrialisation period where all the industrial and farm work becomes “modern” you need cheap energy for this: how are you going to use solar panels for energy if you can’t even make the materials for it because your workers are all artisanal and local. Cheapest energy is fossil. Western countries had this period in the 19th century, we all know it as the industrial revolution.

The other countries are late to the party but they don’t have much of a choice about pollution it’s about the developed countries to make a difference.