No, I do not believe that a multi trillion dollar company would spend billions of dollars making a major change to their devices, without having any idea of if

No, I do not believe that a multi trillion dollar company would spend billions of dollars making a major change to their devices, without having any idea of if it will be better or not. Whatever internal research that these companies made, to make them want to change their multi billion dollar market like this, they can go public with it first.