It’s nowhere near as simple as just “greed” I’m afraid.
Rich countries cut down their forests long ago, or enriched themselves through taking the natural resources of other nations. Before they knew the full consequences.
Countries in Africa, Brazil, Borneo are just playing catch up and our stupid lines written on maps prevent us from doing anything about it. Our entire civilised World has been built to look after number one and the close surroundings. We could all pay Brazil 5 times what they make from cutting down the Amazon, or pay Borneo to keep it’s jungles, but who’d back a Tory, Labour, Democrat or Republican government to do that? Half the UK celebrated us just cutting our foreign aid budget ffs.
When things need to be done on a global basis, we simply can’t manage it. Lines on maps, drawn in many cases thousands of years ago, in some cases in the past decades will forever hinder us from doing what’s required on a global scale.
The Amazon should belong to the World, but these lines mean one country can do whatever the feck they like with it, and who can blame them? As I say, in many cases it’s just people trying to make a living.