[vcjohnson]

>he problem, though, is that not only could this limitation manifest itself as incremental annoyance

Eh I'd hazard a guess that the vast majority of mobile office users don't need unlimited cloud storage (especially with 15GB free anyway) or advanced editing capabilities. Both of those features would be well served in an enterprise environment, but there are Office 365 Enterprise subscriptions for that. Maybe no dropbox integration is an annoyance, but I question whether that would be enough to push out existing office users.