I couldn't disagree more... I see iPhones EVERYWHERE and given the amount of talking people do about them, I think it's fair to say it's the ONLY thing people currently compare against. Palm? Dead. RIM? Alive but really a totally different market. Symbian? Boring. Windows Mobile? DOA.
The proof to me was last week on an airplane to California. In a row of 5 seats, 4 of the row occupants had iPhones out during the flight (including me)