We forget he experienced major failures in the same line of business.
I'm not a Jobs fanboy, but I honestly don't know what you're referring to here. Apple had some major missteps in the late 80's and in the 90's but they were when Jobs was no longer in control. His biggest mistake was getting Scully to be CEO which changed the environment and got him ousted from any power. It was after that when Apple made all of their major blunders. Unless I'm missing something.
Apple got back into the game when they bought out NeXT and put their CEO (Jobs) in charge of Apple again. NeXT became OS X which got people excited about Mac again (or at least it got ME excited) and from there we went to iPod, iPad, iPhone land, etc.
Ok, I will grant that under Jobs the G4 Cube failed horribly. But beyond that, not really sure what you're talking about.