Netflix is a subscription to access and stream a lot of shows, but it is "fee for subscription service", not all that different from an alarm company subscription, OnStar, or a subscription lawn maintenance company.
* Ok, Steam / GOG Games or Microsoft Windows is a licensed use with limited conditions, it's not like you can use it on just any hardware
edit: And the ever fun one of free shipping with a minimum order of X, great way to make you think you're getting a deal by giving them more money.
Short version: Subscription retention and time spent correlate, so they still have the "crack dealer" model incentives.
Coupon codes on your receipt, planned obsolescence, strategic item placement in store to encourage buying additional or more expensive items, loyalty programs and points, physical marketing mailings, targeted pre-internet advertising, etc.
i.e. is it possible to provide something like (internet search) or (social networking) that relies on a paid model? Not everyone who needs/uses google or facebook can afford an iPhone.