alt Hacker NewsNor did GGP's approach require them to be in google or apple's walled garden.
That's exactly the point: there's an easy and common method that many people choose to use, but there is still a perfectly working method for people who choose to not use apple or google.
the part you are missing is that this is the situation for now. Emphasis on for now. Google are already moving to restrict what software your phone can run i.e. they control your device.
Please, don't be so obtuse just for the sake of argument. Any rational, well-informed person can wee where this is going.