Personally, I'd love to ban autoplay videos, but I'm really concerned about web pages here. A custom app, to me, doesn't fall under this purview. Netflix can do just about whatever they want in their own app AFAIC.

For websites that have a legitimate use for autoplay, but are still websites and not custom apps, I would support making it a user-controlled preference that only works for logged-in users. Usually, people view YouTube as a logged-in Google user, so that can be used to allow them to turn on autoplay for that.

go to: https://www.netflix.com/HdToggle#bxid_autoplay_true so you can move straight to step 7, or...

1. Select your profile

2. Hover mouse pointer over your avatar in upper right corner

3. Click "Account"

4. Scroll to "MY PROFILE" section

5. Click "Playback settings"

6. Scroll to "Auto-Play" section

7. Uncheck "Play next episode automatically"

8. Click "Save"