It funnels you down the cloud route pretty heavily which is at least in what we do is incredibly dangerous and leads to regulatory problems. What we end up with is a nightmare tangle of GPOs where we don't know what feature is going to be turned on next in a trivial update which will end up with our mandatory signed in O365, because that's how you have to pay for it, pushing content to OneDrive or something. Even the file save dialogs switched a while back to push cloud first and we had a nightmare even though OneDrive was disabled (!) because no one could use it suddenly.

THAT is a complete dealbreaker.

As mentioned, the calendar and contact management is so bad that we ended up using iCloud anyway for that.

There's also a better win for us which is moving to R with tidyverse. Less footguns, can work with people via a VCS fine, can wrap a whole data pipeline in automation in a makefile, doesn't go down for 2-3 days a year.