Apple's intent has been to run iTunes (Music) as a break-in venture. However, since the introduction of the App Store and Apple's 30% cut, the operating costs are spread out more evenly and thus Apple is probably operating on a 2% margin (Apps) and 1% margin on Music. In this case, it's all about scale.
I would like to know where they got their info. It's well documented that iOS is dominating.
Which mobile platform users spend the most?
Since Apple has a head start of over a decade, it is quite illogical that BlackBerry will be turning a profit on BlackBerry World in the near future not to mention its an exercise in futility trying to guess with almost zero real data.