Office 365 is killing it because Microsoft is entrenched in enterprise. They aren't leaving any time soon, no matter what Apple, Google, Yahoo!, or any Random S

Office 365 is killing it because Microsoft is entrenched in enterprise. They aren't leaving any time soon, no matter what Apple, Google, Yahoo!, or any Random Startup X does. It has less to do with the quality of the service, its ease of use, or whether or not people actually like using it than the above note about entrenchment.