I recently heard a preacher say, "The fruit of an apple tree is not apples... it's another apple tree." An apple tree naturally bears apples, it's a characteristic of a fruit-bearing tree. That's akin to a leader having followers. A leader cannot be one without someone following him. A billboard on the way to work reminds me daily, "A leader doesn't create followers, he creates more leaders."
The result of good leadership is not followers... it's the creation of more leaders. Whatever you lead, if you're not replicating good leaders, your role as a leader hasn't reached its full potential.