There are things that give him power, but he does not have it himself. If Prospero could control love and other emotions, everything would be different. His subjects would probably adore him and be happy to be under his control. Why would he make his subjects dislike him? He has no choice. Prospero's power is limited and this shows that he has weaknesses. Some of his subjects may believe he is a god, but he only uses his resources. He deceives his subjects. But Prospero's domain of power is not as vast as his subjects, including some readers, think.