Apple loves to bring its iTunes statistics out to parties, because they are often quite impressive. At WWDC, Apple announced that iTunes had 575 million users, and that the App Store had paid out $10 billion to developers
, with $1.5 billion of that coming in just the last year. Now, Asymco is saying that iTunes is adding about 500,000 new accounts every day.
Assuming this is true, and Apple can keep up the pace, iTunes should hit 675 million users by the end of the year. What's probably more impressive though is that the revenue per user rates haven't dropped all that much. According to Asymco, back in 2009 when iTunes only had 100 million users, the average yearly gross revenue per user was somewhere around $73. Now, despite having nearly 6 times as many users, that number has dropped to about $39 per year per user.
Unfortunately, we can't really put these numbers in much context, because neither Google nor Microsoft release similar statistics for Google Play or the Windows/Windows Phone Store.