RCS is awful. It’s an out-of-date, encumbered “standard” with poor global commonality in adoption. It exists for one reason only - because US carriers wanted some way to keep charging per message like their old sms cash cow, instead of being reduced to just proving dumb internet piping. Despite that, the carriers couldnt even agree amongst themselves on the "standard" RCS features to deploy for 10 years or so, until google co-opted the effort for their own goals semi-recently.
Let it die.
That’s only sort of true. Consumers don’t pay directly, but the carriers charge each other for them, and they still make a lot off people injecting sms into the system (think twilio, marketing, 2fa, application generated traffic). RCS was aimed (and priced) to try and make lots of money off a2p
There are some bad points for RCS like encryption, but still it's far better for openess/compatibility compared to iMessage. Perhaps good to have as an alternative to MMS for fallback of iMessage.
