@poetgrant It's "industry standard" and it's hard to break that mindset. But I am on the same page as you. If only there were alternatives that were as "complete" as Office365.
Yes, you can argue that LibreOffice is better until you're blue in the face, but until LibreOffice begins to offer corporate-level support and the majority of techs are familiar with it, tough shit I guess? Also, I'm sure a business would prefer Office365 alone compared to using two solutions: LibreOffice+Thunderbird
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.
Fosstodon is a Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.