[mikesabat]

The carriers have been working on RCS Messaging since 2007. https://en.wikipedia.org/wiki/Rich_Communication_Services

It's taken a decade to get everyone on board so they could innovate on SMS. Since the carriers don't have the leverage that they had pre-iPhone and Apple is not supporting RCS, the positioning paints RCS as an Android/(non-iphone) messenger.

It's an amazingly fragmented space.

[dv_dt]

Looking at the objectives of the spec from a 10k level, it feels like it's hard mixing network quality with application layer logic in a way that's just going to be messy, hard to maintain, and calcifying of applications. I know the OSI layer model seems out of fashion now, but RCS feels like a lot of lat-80's/early-90's interconnect protocols that were killed by faster moving, more layer-isolated approaches using plain HTTP or applications over fairly direct TCP/IP.