Google doesn’t want to build that. They have publicly stated as much in the past. At the time at least they are pushing for improvements to the MMS infrastructu

Google doesn’t want to build that. They have publicly stated as much in the past. At the time at least they are pushing for improvements to the MMS infrastructure/protocol to support iMessage-type features. But also just because they build an equivalent system doesn’t mean anyone would move to it. They tried that with Google+.