We all know that Apple's iOS devices are popular. Surveys and analyst predictions place Apple at or near the top in the smartphone, tablet and media player market. That's great for headlines, but what does it mean for Apple's bottom line?
Horace Dediu of Asymco did some fancy figuring and calculated that the annual revenue for each iOS owner is US$150. This is based on 180 million current iOS users with 200 million iOS devices. Given the astronomical growth of the iOS platform, this installed user base could quickly climb to 500 milli
