1) A user wouldn't stream Netflix from a data centre in America. It would be local to the country on the Netflix CDN
2) The stream is encrypted. Firstly with whatever DRM the video uses then with TLS.
3) The majority of internet traffic is encrypted. It doesn't matter too much if the transport over fibre isn't.
4) If someone cared about security they would uses VPN where they had control over both sides.
https://openconnect.netflix.com/
This is a pretty good read, albiet a few years old.
https://gizmodo.com/this-box-can-hold-an-entire-netflix-1592...
1) A user wouldn't stream Netflix from a data centre in America. It would be local to the country on the Netflix CDN
2) The stream is encrypted. Firstly with whatever DRM the video uses then with TLS.
3) The majority of internet traffic is encrypted. It doesn't matter too much if the transport over fibre isn't.
4) If someone cared about security they would uses VPN where they had control over both sides.