Honestly, for Office, Outlook and Teams you can find alternatives. But in the identity field (Entra), it gets more complicated. No all-in-one replacement options out there that cover everything Entra does, so you end up having to stitch together a bunch of stuff.

I’m all for ditching closed services, especially for governments, but there will be a couple of difficult years before investment in open-source software produce solutions that can match. So, no better time than the present, eh?