I would really really like to give my money to one company, except Google Docs/Drive sucks (er, doesn't meet our use case), Office 365 - Outlook sucks (in comparison to Gmail) as well as whatever the Microsoft file syncing option is (OneDrive?). Our Dropbox for Business comes up for renewal this month and Google and Microsoft's file sync stuff isn't remotely comparable. Same for Slack vs the Hangouts incarnation of the moment.
I primarily blame Google. We are probably paying an extra $500/user/year because outside of Gmail and Calendar the other G Suite services are pretty awful in comparison to their competition. It is super frustrating.