@Valmond@lemmy.world
@SrMono@feddit.org
Very good question and one of the big critic points about signal.
It is theoretically foss, but so complicated apparently, (or parts missing?) that it seems nobody ever menaged to set it up.
So in effect it it proprietary.
And since I is lock-in there is also no incentive to start another server. That's one reason to use federated protocols.

:xmpp: