My guess is that the whole thing smells of an incredibly ham-fisted way of trying to force more people to subscribe to Office 365. It was obviously created and pushed by bean counters who have no direct contact with the public and live in their own cloistered world of spreadsheets running on multi-monitored desktop computers. In short, completely out of touch with the real world where someone goes into an AT&T store in the mall and wants a new phone. They look at phone A and it comes with 15GB of free storage, unlimited photo storage, and tons of music storage, plus it runs all the apps you would ever want. Phone W on the other hand only comes with 5GB of free storage, no extra photo or music storage, and all the cool apps are non-existent or not as good. They could care less about Office 365, which is basically useless on their phones anyway, is total overkill for 99% of people, and carries a subscription fee. It's really a no brainer for most people. Remember "mobile first, cloud first." This OneDrive fiasco destroys that strategy.