Comment by hocuspocus

> LineageOS, GrapheneOS, /e/, and all the others could build their own RCS client. They may not be able to register with Google, but they can make an RCS app nonetheless.

Building a spec compliant RCS client for the love of the game, I guess.

> but there's no need to pay Google a dime to make use of the RCS for Business specs.

Assuming we're talking of global RCS and not domestic deployments (China and Korea mostly) you pay Google indirectly in all cases as Jibe is monetized via A2P revenue share.