[Corrado]

Agreed! However, I must note that Netflix doesn't use AWS (or any cloud provider) for streaming content. Everything you're watching on Netflix is streamed from one of their own NAS boxes located in or around your ISP. AWS is used for everything else (i.e. billing, suggestions, ratings, feedback, support, transcoding, etc.)

Yes streaming is a large part of Netflix but it's not the only part, and may not be the largest part. Netflix has over 30,000 EC2 instances running AWS plus a lot of other resources (S3, redis, etc.) Building Netflix on your own platform would be foolish.