> Netflix won’t share that data with anyone

You think I'm only talking about Netflix? What about the data giant Spotify?

https://libraryfreedom.chat/t/extraordinary-amount-of-teleme...

And as for the one company you mention, Netflix, here's some info which simply proves your claim wrong:

https://www.reddit.com/r/netflix/comments/2uffl9/how_much_da...

https://help.netflix.com/legal/privacy