I.e. poor ROI, wasted money.

I’m not sure what the best solution(s) are, but I would put money on the idea that citizens should be taxed to keep sufficient forests going. Trouble is, which taxpayers should carry the burden, given that not all countries have forests to protect and it means less economic activity (unfair if you compete against countries who have already chopped down their forests), so a double penalty, mostly for less developed countries.

Everyone on earth needs the increment to be thriving, but arbitrary boundaries like countries are getting in the way.