What I find interesting, and reflects my ignorance of how these things are used, is that if you look at, say, FAANG companies, Office isn't used. I've worked for two FAANGs over the past couple of years, and everything is done via Google docs. Replacing a giant suite like Office looks hard, replacing something simpler like Google docs looks very much simpler, and surely should suffice?

Well, if your goal is to be 100% the same as what Microsoft offer, then sure no there's not. But that's letting them set the goalposts.

If you look at the features you actually need and are willing to explore different ways of doing things that are not exactly like M365 there's more options. France and Germany are also working on freeing themselves from M365.

This kinda thing sounds a lot like those RFPs that were specifically written so they could only be fulfilled by Microsoft because it was just a list of their feature tickboxes.

The best time to do this was ~2010 before all of the cloud lock-in stuff.

The second best time is now.

Google has drop in replacements for most of it. But that doesn’t solve the problem of using US tech.

For many services there are drop-in Replacements available. I don't see what's so special about Mail or Calendar from Microsoft vs other vendors.

The Quality is also Shit. I get some stupid Errors when trying to Access OWA every other day. Then I have to reset cookies/cache and can login again

There's Nextcloud/OCIS/Owncloud for Sharepoint (god I fucking hate Sharepoint) and Onedrive, there's Libreoffice/Collabora (and Onlyoffice, but that's russian...), there's Thunderbird for Email. Windows is absolutely replaceable also, of course, maybe even easier than the Office365 subscription mentioned above.

The lock in only exists in brains of (old) people that can't adapt. MS products can all be replaced, and should be in the EU. You simply cannot trust an American company anymore after Trump.