There's also the Google factor to consider: realistically, for many enterprise use cases, if they switch away from office365 they'll be switching to gsuite apps. As much as I'd love to see a libre solution gain traction at the enterprise level, I don't see a realistic path forward (in the short term, anyway) so I'm left hoping that Office365 can hold on, if only so that Google doesn't take over.
I had an interview for a startup with about 20 employees and they were "all about the cloud." Not sure if that was the startup mindset or the small business mindset though
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