Dude, no way. While the iPhone may have had a temporary large majority in the "smart phones consumers actually want to buy" field, they never had more than a fraction of the cell phone market, and they never established a monopoly in the sense that there was essentially no other phone you would want to get. How could it be? It was only on AT&T, and AT&T doesn't have a monopoly as a network.
While the iPhone's very competitive, and while it has a near monopoly in terms of media popularity — I've seen many iPhones in movies, and no Droid — it by no means came remotely close to a monopoly. Just as the iPod was never a monopoly — it had an enormous marketshare, but there were many successful MP3 players that competed with it and served as a viable option for people who didn't want an iTunes lock-in.
While the iPhone's very competitive, and while it has a near monopoly in terms of media popularity — I've seen many iPhones in movies, and no Droid — it by no means came remotely close to a monopoly. Just as the iPod was never a monopoly — it had an enormous marketshare, but there were many successful MP3 players that competed with it and served as a viable option for people who didn't want an iTunes lock-in.