Rich countries are already paying Brazil a lot of money - to destroy the rainforest. The cleared land is mostly used to produce meat, and Brazil is the largest meat exporter[1] in the world.

[1]: https://www.worldatlas.com/articles/the-world-s-largest-expo...

The problem is enforcement. Rich country gives non-rich country money. Non-rich country still destroys rain forest. What now?

You are paying subscribtion, if the forest is destroyed no future money. You don't kill the goose that lays golden eggs, even dictators and idiots know that

that's a very very dangerous assumption, people can be really shot term focus, I saw that in many companies, cash out and run, tomorrow it's far away.

Rich countries are not charities, such donation achieves no material nor political objectives.

That's fine. Then rich westerners should not care when it gets destroyed.

Is California droughts, loosing arable land and billions in crops not material enough?

Wasn't there a talk about the Amazon being used to rebuild after a nuclear war?