While appearing to have double the collection of Apple TV or Vudu, what do you get in Netflix’s 10,000 movie collection? Basically, you get a lot of back catalog (classic movies) and a lot of TV shows (unheard of in rental situations!) right as they hit the market. But you don’t get the same blockbusters on day one release that you’d get from Apple TV or Vudu. That makes the Netflix box and disc system a great supplement to those systems, which seem to specialize in new releases. (Kudos to Saul from the NYTimes for discovering this initially.) The business model behind a flat rate unlimited streaming system is unheard of. Sure, they’re taking a lot of older content, which is inherently cheaper. But think of it this way: For a nine-dollar-a-month account, you can hold off on buying older DVDs or watching TV shows. A box set of Ghost in the Shell or 30 Rock costs over 50 bucks on DVD or by renting individual downloads, but you can stream many of these episodes for nine bucks a month. Buying the Karate Kid, an old movie not on many download services, costs a few bucks on DVD, but I can just watch it whenever I want as long as I’m a Netflix customer. (And consider that the number of great back catalog titles like that will probably outpace new releases you’d find on Vudu or Apple TV.) It’s basically the same as Netflix’s current model, but instead of being limited by the postal service, you’re limited by your spare time and interest in older titles. (And don’t forget Netflix’s disc-by-mail service, which still covers new titles.)