One of a kind - launched the ipod into a market that already had numerous mp3 players and took it as his own, launched the ipad which I could quite obviously see was a huge mistake as nobody would want one or buy one. I was right - only 304,000,000 sold by January 2011! I'm not alone though, Alan Sugar famously claimed in 2005 that the new fangled ipod would be "gone by next Christmas".
There are very few that can bring the market things it already has, and things it doesn't even know it wants yet - and sell hundreds of millions of them - he did both, many times.
