So instead of buying devices and subscribing to services would you be willing to subscribe to something that gives you all of a company's services plus a device or several... and always the upgraded version?
Appleinsider floated this idea today and it is intriguing... especially if Apple acquired or launched a MVNO. Depending on the devices you want a subscription package of $100, $150, $200, etc. could be offered. New iPhone comes out, shows up in the mail with a box to return the old one. Same with the iPad if that's the sub level you choose. Always new devices and always having access to the whole suite of services.
Google and Apple probably have the offerings. Amazon could do it using third party devices. Could be an interesting model.