Well for the time this theory was written, it was basically correct. Now that we have the AVP2 movie, we know for a fact that the predators have a 'home' planet.
doesnt help them
yes they might have a home but what if the aliens infected more predators and got to their home planet then would they become extinct or wil it be a fight for survival
Big Game (Predator)
Race War (Predator)
Flesh and Blood (Predator)
Thrill of the Hunt (Alien Vs Predator)
Earth War (Aliens)