The problem: illegal farming and logging will always be more profitable than whatever the West can manage to pay countries like Brazil - not to mention it isn't sure how much the West can reasonably hand out in payments given the multiple crises straining our budgets, or how much isolationist politicians like Trump want to pay out / if they are even interested in climate and nature protection.

And on top of that come the corruption issues. Large amounts of foreign money flowing into poor(er) countries has historically always invited either said money being grifted away or redirected to other political budgets that have nothing to do with the purpose the money was originally earmarked for.