> Seriously, just use Office 365. Otherwise you'll forever be dealing with a constant low grade stream of interoperability glitches.
The obvious answer is that they're already using an alternative to MS Office if they're using Google, and the reason for the migration is not interoperability issues.
Importantly, however, Office 365 is also not a usable alternative if you need perfect interoperability with MS Office files. Trust me on this. I've had an administrative position for the last couple years. Suddenly I went from rarely having to deal with MS Office files to a steady stream of them.
No big deal, I thought, since my employer uses Office 365. It's literally a joke to think you can share files with users of the desktop version of MS Office. Many, many times a message has popped up telling me I need to open the file in the desktop version if I want to edit. (And I don't think it supports the older Office files at all.) I mentioned that to the secretary and she just laughed and said you can't do collaborative work with the online version when everyone else uses the desktop version.