I'm going to be really interested in seeing how this rolls out (that's assuming it ever does) in the United States. All four major carriers have RCS implementat

I'm going to be really interested in seeing how this rolls out (that's assuming it ever does) in the United States. All four major carriers have RCS implementations, but as far as I can tell, none of them are interoperable or universal across devices. Would Google step in and offer a solution for all Android devices on a carrier? If so, would that interoperate with other carriers' RCS implementations? Thinking about that makes me think rolling out to other countries prior to the US was a good idea.