Business gives you a massive high. Doing a great deal, coming up with an inspirational solution... It's very addictive. But it doesn't last long. In isolation, it's a bit sterile. It doesn't reward the soul.
When I came into the mobile phone business, I was really the upstart who pretty much took the business, not quite by storm, but really made an impact on it quite early on. But it was from a position, really, of feeling that I was a last mover.