[gruez]

>On the other hand, I believe AT&T zero rates their RCS messages if you have an unlimited texting plan

But what if you don't have an unlimited texting plan? Let's say your current plan includes data + modest amounts of talk+text, but you do most of your communication over chat apps, so you never really touch your text allowance, even though you text a lot. now with RCS, you now have to pay extra $ for those texts you're sending out, or pay $ for the unlimited plan. plus with chat apps, you could send free over wifi. so from a customers point of view, RCS is worse in every way.