that is a great thought, but i tend to go with known science, and as far as we know, if any entity accelerates by achieving advantage with a new trait, there will be some form of selective pressure to limit the advantage. if not for that darwinian principle, the whole earth might be covered in ants.
The disconcerting thing is, the earth has been over-run with humans. Maybe the limiting factor for us will be our incredible ability to form collective intelligence, an unprecedented occurrence on earth.... perhaps to a level that has over-run our habitat. Malthus may have the last laugh, after all, but not in a way he anticipated.