>According to whom?
Anyone with a brain. Steve Jobs wasn't successful because he found it appropriate to act like a 2 year old in a business environment. He was successful in spite of it.
>Leadership isn't about making friend; It's about getting people to obey.
I agree that leadership isn't about making friends, but the other half of the book's title is "and Influencing People," which is about getting people to do what you want them to, which is exactly what you said leadership is about.
Hitler and Stalin were not good leaders. Sure, you can force people to do things if your commands are backed up by the promise of torture and death, but that's not leadership by any stretch of the imagination.
You can be successful for a number of reasons. Most good leaders are successful, but success alone isn't an indicator of leadership ability. Good leaders are far too rare for every successful organization to have one.