I think at least in part because it’s really difficult and expensive to control the stack from hardware, languages, compilers, OS, App Store etc. the way Apple

I think at least in part because it’s really difficult and expensive to control the stack from hardware, languages, compilers, OS, App Store etc. the way Apple does. That and the idea that lacking a feature is much better than having an early but not yet great version of a feature. Apple are very good at pointing at their great features and getting away with lacking some others without that being a problem.