content: Because Microsoft also bundles IT services in with their subscription based licenses.  My company just switched to 365. Our inbox moved from only 300Meg to 50GB with unlimited archives.  All stored by Microsoft.  Would be great except the new (Microsoft) mail servers are constantly dropping connections.  When reconnecting to the mail server account validation has a 50% chance of working.  Sending an email can take up to a minute (if it works at all).   Calender syncing is incredible slow (can take upwards of 5 minutes to sync a single days worth of events).  Outlook will crash if you enter an equation then delete it.  Powerpoint constantly crashes.  None of the new apps can display equations written in Office 2010 or older.  It's a class A clusterfuck but this is the cloud and management has been convinced SaaS is the future.