What you've said about making economics drive reforestation is true, but that's like saying that to end hunger you just have to give people food.
So you suggest planting trees that take 40 years to grow when the people doing the deflorestation are doing it because of profits that they'd never get via that method. (Economics)
It's the same with the plague that is eucalyptus, you know what drove its plantation and override of all other natural trees and plants in many places of the world? Economics! So you see that just economics might not be a very good way to solve the problem at hand.
So what do you propose to make the economics work? Highly tax meat? Or other products that are indirectly causing deflorestation?