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Vetteman94 said:

Yeah but how many of those iPhone/iPod sales are actually upgrades from the older models.  I doubt the install base is anywhere near 187M.

I think I read the number of people who upgraded to and iPad 2 from iPad 1 was around 25%. That means 75% were new buyers. I would guess the other devices would have a somewhat similar profile.



Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.