Netflix isn't using AWS for their bandwidth. The media files themselves are being served by Level 3's CDN (http://www.reuters.com/article/2010/11/11/us-levelthree-idUS...). Netflix is using Amazon for a lot of their application servers, but when you're serving as much bandwidth as Netflix is, you go with a CDN for media distribution.
That's not to say AWS is bad or anything, just that AWS isn't supporting all that bandwidth for Netflix.
That's not to say AWS is bad or anything, just that AWS isn't supporting all that bandwidth for Netflix.