Do you have a source that it was started by Google? From looking around, they support its development but it was an industry initiative, and Samsung was one of the first OEMs to support it.
And I would argue that the language used implies Google created RCS themselves (it was their idea): "RCS is Google's idea of a solution"
It's the Microsoft 90's playbook https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguis...