sorry but that's just naive idealism, my wife has android flagship, a Samsung s10, she will receive one more year of updates, then she will be on her own, my daughter has iPhone 6S, this old device will receive iOS 14 soon.
my wife do not care about updates, she will not hesitate a second to get iPhone once she knows her social media or pictures is not safe on her android device, this is the issue Android have and Fuchsia have to fix.