Not a straightforward scenario. Doubtful most other carriers were willing to make the same deal AT&T made at the time (no customization, etc.). People were waiting in line for iPhones to begin with, so they would have to have had different manufacturing, etc. Apple could have probably even released a Cocoa Stack or something to run the iOS ui on any Android phone out there and gobbled up a huge market, but Jobs wanted total control, and seeing Apple's current profitability, it's hard to realistically predict a better move than the ones he made.

FD: Until a couple of weeks ago I owned no Apple products except a very old ipod nano someone gave me years ago. I'm no fan of Apple, but it seems unrealistic to second-guess the success they had for the last decade.