The World Consciousness already possesses a certain level of thinking capability, so it is very clear what kind of fate it would face if Zhou Tian were to annex the world it inhabits. Unwilling to face such an end, even knowing it cannot rival Zhou Tian, it will strive to resist in the face of his threat.
Moreover, in the situation where its resistance is of little effect, it's not surprising what kind of decision that World Consciousness would make. As long as it can repel Zhou Tian at that time, then it's possible for that World Consciousness to take any action imaginable.
Given the capabilities of that World Consciousness, currently hindered by the interference of the Abyssal Consciousness, it cannot wield its strength. However, if it truly were to prepare to fight desperately, then in that world, if that World Consciousness wanted to do something, it would be difficult for Zhou Tian to stop it.
