[bebna]

Never. It is just a fancy MMS in new disguise. Carriers / patent holders will hold to it forever while praising it as the new best thing.

[lxgr]

I believe even then only US carriers (the rest of the world has moved on from P2P SMS, and only businesses are really still sending them for SMS-OTP and marketing), and of course Google, as the only party actually invested in it (via their acquisition of Jibe [1]).

[1] https://jibe.google.com/

[singpolyma3]

You can get access to send MMS though. RCS there is no one selling access yet, especially for person to person.

[WorldPeas]

It seems people are, but not anyone with a big name: https://jibe.google.com/partners/messaging-partners/ I'm guessing it's provisioned this way. https://developers.google.com/business-communications/rcs-bu...

EDIT: https://github.com/android-rcs/rcsjta