There are a lot of leadership theories. One of the main fundamental theories that leaders are faced with is the underlying nature of humans. Are humans inherently evil or inherently good? In other words, do you need to micromanage people or not?
Experience has shown that when the cat is away the mouse will play. People need to be accountable to others to get the best results.
Imagine having a ring that makes you go invisible. When you put the ring on you have complete invisibility. In that situation, how many people will be honest? Not many.
Leadership should take away invisibility and make the actions of everyone accountable and easy to see.
High level employees can manage themselves better than low level employees. Most low level employees will just sit around or steal from the company unless proper supervision is in place. Higher level employees have more at stake in their job. In addition, the mere fact of getting a college degree shows that a person has internal motivation without direct supervision. In any case, good leadership will know the proper amount of supervision that will be required to get the job done.