Why doesn't Brazil develop the Amazon rainforest?

Amazon rainforest plays a key role in maintaining global climate balance, purifying air and protecting biodiversity. Amazon rainforest has excellent carbon sink capacity and plays an important role in maintaining carbon balance and regional climate regulation. Moreover, the Amazon river basin in Brazil is the region with the largest tropical rain forest area, the highest biodiversity and the largest aboveground biomass in the world, which plays a positive role in regulating the ecosystem. If the Amazon rainforest is developed, it will become a savanna and cannot maintain the climate balance. Moreover, if the air cannot be effectively purified, the air will be seriously polluted, and at the same time, many creatures will not survive.