To change this leverage situation Netflix should be thinking about:
1) highlight their original content including any series that they might revive, such as Arrested Development. this means place it in it's own que / row for browsing. make it obvious that it's theirs. I found Lillyhammer on accident. didn't even know Netflix was doing that until after the fact.
2) offer a la carte rentals the same way Comcast On Demand / iTunes does.
After al la carte was up and running they would, ideally, turn their service in to a video locker. Like Valve software's Steam for video games, but for movies and TV DVD's. Offer to let people buy DVD's and stream them to all the devices that they already stream to. For people with massive collections of physical media offer to let them mail in their DVD's (permanently) and get credit for each one that they turn in, having each one added to their library. Offer a clause that says they will own the rights to a physical copy of the media in perpetuity, even if Netflix goes out of business)
With that level of security in the $ people are spending I could see only "buying" DVD's on Netflix and storing them in the cloud. Netflix would be getting customers to lock in to their service the same way people are locked in to their iPhones because they've paid for so many apps. THEN Netflix would have the leverage it needs as well as the customers AND be one of the only ones that is device agnostic and, thus, ubiquitous.