The consumer owns one phone or the other, and the switching costs are ridiculously high (in no small part because of other properties of these anti-competitive

The consumer owns one phone or the other, and the switching costs are ridiculously high (in no small part because of other properties of these anti-competitive store licensing models). The average consumer happily can shop at multiple grocery stores, even on the same day as part of the same trip... if isn't even uncommon. The segmentation of users into the ones that own an iPhone vs. the ones that own an Android device should be looked at as creating two separate markets, similar to how if you have a monopoly on groceries only in Wisconsin you somehow aren't considered a monopoly just because your national marketshare is small.