With the death of Steve Jobs, people praise him highly to be an excellent innovator and leader.
On the text book, we believe that a good organization should not depend too much on a single person, and likewise, a good leader should not make his team so much dependent on him.
A good leader should be one who manage to motivate and enable the whole team, rather than to make everyone follow and even dependent on him.
Having said that, the most objective or even the most appreciated metrics for measuring a successful company is the revenue and the value of the company, and in that case, it seems like Steve Jobs was violating the above principle, but yet he and his company managed to earn.
So what's the problem?