I would imagine that many EU governments would like to replace MS Office too. EU sponsoring open source development for a mandated replacement would be a huge risk for Microsoft.

The European Economic Area + UK also have a lot of telecoms and networking experience. If they have to pay for improvements to edge networking for a reliable replacement for Teams they could easily bring farm that work out to their telcos.

With enough political motivation barriers will be removed one way or another.

That seems like a downside to me, but as a Linux user, I tend to shun Microsoft products.

I do have to use Teams occasionally for work and bizarrely the web client in Firefox works far better than the native Linux Teams client. Not particularly difficult as the Linux Teams client wouldn't do anything except display a blank box (this was on Ubuntu).

That's not surprising: https://itsfoss.gitlab.io/post/the-official-microsoft-teams-...

Yeah, I did notice an issue with feature parity with their application.

I hadn't heard about PWAs (Progressive Web Apps) before, but it doesn't look like they're commonly used on Linux. At a first glance, they look a bit similar to ActiveX to me.

Indeed, even merely as a pinned tab in Firefox it's excellent.

Or so the theory. But what is that specific functionality that I get from this integration? That I can preview an Excel attachment WITHIN Teams instead of starting another Excel instance? The only useful thing is that Teams calendar is the Outlook calendar, definitely not a reason I'd use Teams if not forced to.