What does the following passage mean? “Those he commands move only in command, Nothing in love: now does he feel his title Hang loose about him, like a giant's robe Upon a dwarfish thief.”

Macbeth is no longer a king because he is respected and loved by his people. Those who work for him are afraid of him and do what they do because they must. Suddenly the very large robe of a king no longer fits him; he is nothing more than a dwarf of what a real kind should be.