From a software that is used in the company, I expect you can leave as an administrator with a single click all external Microsoft services incl. Microsoft Live and what all that stuff means.
Already in the 2010 version had to öffentlche templates etc. hide from the staff. Clear Microsoft wants that one's data with them Saves, so one makes oneself dependent on them and Microsoft has a long-term revenue stream. I understand. But I must not vote there.
We are now testing the company LibreOffice, OpenOffice and other alternatives.
Another reason is to continue using older Microsoft Office versions, and to look for alternatives that Microsoft plans in addition to the above points towards cloud service. And they walk towards subscription.
It used to be bought and used a version. She was also used offline.
Office 2003, for example, today for private use (letters, a bit Excel) is still perfectly adequate. But if someone Microsoft Office 2003 uses more than ten years - which is no problem - naturally deserves Microsoft no longer in it. So they think of concepts in order to cash in on a regular basis can.
Meanwhile, Microsoft will even individuals Office 365 subscription tighten as - with annual subscription fee. With possibility to share the data with FB and Co. Internal company data? Hardly likely.
Even privately, I do not feel like it, to save my private data somewhere at Microsoft or elsewhere. In Microsoft Office I work sometimes very private data. Invoices. Health Data etc.
Considering the fact that LibreOffice is free and all the disadvantages has not, I can only give Microsoft Office 2013 a star.
If you absolutely need Microsoft Office in the company, you can also rely on the version of Office 2010, and then look up alternatives for the future.
For me, Office 2013 compared to Office 2010 no advantages but many disadvantages. Too many disadvantages. Therefore, a star. From me a very clear "do not buy".