After the Tchap project based on Matrix, the French Prime Minister asks anyone in the gouvernement to use Olvid, the only app validated by the ANSSI, with metadata encryption and no centralised architecture nor contacts discovery. But only the front-ends are open source, not the back-end.
I agree. The challenge in running your own stuff is adoption. Having my item chat platform is kind of outlets if no one else is willing to switch to it for me. That’s the same problem I have with Signal when I decided to stop using anything Meta owns.