Therefore, we are talking about thousands of years to effect a change. We have no really good idea how long it took for the transition from animist to Taker to occur, although we do know that there are still some animists left in the world even after the approximately 10,000 years since agriculture began. It could easily take that long to change things again. The only way that change will occur any faster is if there is addition an selective pressure. I expect that the pressure will increase no matter what we do.
Evolution is a continual process.
It will never stop. My bet is that either we will evolve slowly into a culture that is more sustainable, or we will have a series of major ecological crises that results in the eventual survival of a culture that has learned its lesson. Keep in mind however that this resultant culture may well deteriorate, after say 10,000 years into a Taker culture again. We cannot break the cycle completely because it is ingrained in the Law of Life.