User blog comment:Gorbaz/Timelines and stuff/@comment-9465750-20120809100458/@comment-3993996-20120809185252

If the IoM fell, another major empire will step in. Like the Tau. Or mabye necrons. Eridicating all other races is impossible for chaos, or any other race. if any race did it however, I'll put my money on tyranids. Or Orks if they could ally (which they can't!)