which is basically impossible of you're a non-profit or donation based insitution versus a multi-billion dollar company. It's why Evernote is still unreplaced and dropbox has the best filesync. Anyy,way.. I've heard good stuff about matrix so will try to setup this over the weekend.
I would happily use another IM, but the bad thing about network effect is that one would need to convince everyone else to make the switch, too.
In order to take over, freedom-respecting services need to become _better_ than the non free ones not only on a technical level, but on a UX one, too.