Well didn’t they initially want carriers implementing RCS with interoperability between each other to sunset sms? But that didn’t quite pan out. IIRC there was a time when Verizon had a limited number of devices that supported RCS but only on their network, similar story with Bell in Canada. Hell at one point even Samsung had RCS but only with other Samsung phones. Fragmentation was rampant so Google took matters into their own hands. Not saying I’m happy Googles at the helm but they didn’t start out with that intention.