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...
They'll share their data with the NSA when they come knocking, just like all the other large corporations. In fact, they probably already _are_ sharing it.
Now said president discovers that a few people he considered trustworthy seem to be secretly having qualms about his increasing powergrabs. He manufactures a few roadblocks in their careers and within a year and a half they have all been cleaned out.
With them gone he is able to go ever further and more brazen. One day he proclaims himself dictator, and all branches cheer and celebrate.
Ever heard of Max Schrems? He did exactly this (use GDPR to obtain his records) for Facebook.
Not sure why you think Netflix would never go through the same hullabaloo - they operate in the EU as well.
But any peer on the torrent you downloaded knows your IP address. Content holders often do this, they monitor the IP addresses that download their shows and send the user a letter via their ISP to cease and desist.