Microsoft has also ruined that.
Whatsmore Teams (at least on Linux) appears to be Skype under-the-hood with just a different UI. Even the name of the audio device for Teams remains unchanged.
Most of the developers have been and still are in Estonia. It would be easier to enforce regulations there technically.
Skype was Estonian.
Skype had it's main dev office in Estonia and that was where most of the development work was done, but it was never an Estonian company.