It's not due to assumption of power, it's about having Satan, the father of lies and abominations, as their lord.

Christ is the eternal king of all there is and yet His power is not corruptible. The earthly rulers who follow Him won't be corrupted too. In the Christian worldview there's no dialectical tension between power and submission as in the worldly nitzschean, darwinian, hegelian or marxian worldviews. It's not about will to power or survival of the fittest - it's about harmony and being in God, of everything being in its right place and order.