Not really. While the iPhone has been influential and a huge success for Apple, it didn't really kill any of existing smartphone incumbents. "Everyone" was only buying an iPhone for fairly limited values of "everyone" (e.g. excluding several continents). Instead, Android killed off those incumbents, taking advantage of the opening the iPhone had created.

So it's really Google > Nokia (Symbian), Microsoft (Windows Mobile), Palm and RIM, with Apple off to the side somewhere. And the complex, multi-faceted Apple vs Google battle in mobile isn't an upstart vs an incumbent, it is a battle of two upstarts who have become the incumbents.