There are a number of places where mobile devices have replaced a "general purpose computer" - like replacing your internet connection or local/cloud photo stor

There are a number of places where mobile devices have replaced a "general purpose computer" - like replacing your internet connection or local/cloud photo storage. I guess it depends if you believe that these resources should interoperate when a user is paying for them. e.g., the humane pin makes you get a separate internet connection, and competing cameras devise clunky/slow ways to access your camera roll. Competing photo services have no way to sync iCloud, etc. All of these things could work like Bluetooth - be secure and relatively open, but they are not.