Comment by prmoustache

> agreed upon

That is the main issue.

There are alternatives but waaaay too many already. Some will say Signal, others matrix, xmpp, jami, deltachat, olvid, simplex, briar, tox,...there is a new one every couple of months but none everbody can agree on.

The sad part is we were halfway there with XMPP 2 decades ago when both google and facebook were interoperable with it.