It's pretty amazing Open Connect[1] doesn't get as much "fan fare" as Netflix use of AWS. This is arguably the core of what they do ( push tons of bits to the end user ), and something the cloud could not do for them.
I am curious if the other streaming video providers are doing something on the same principle to the Netflix Open Connect.
Just by assuming that 5-10% of their actual Netflix video traffic gets served from AWS and the rest gets served from the Open Connect servers, it's probable that any other competitor (except Amazon Video) would see huge savings with a similar implementation.
[1] https://openconnect.netflix.com/en/