Spotify also adds value to the iPhone, before the App Store it was pretty but kind of useless. Make them give both options, people can decide whether easy cancellation etc. is worth 30%, Apple can make up any losses it needs to continue the platform from the iPhone sales price (or they can charge for App Store access or whatever, we should make them allow third-party stores/sideloading regardless), people can then decide whether that platform is worth it over Android.