My problem is I'm paying for 4 streams when I only need and can use 1 at a time. My problem is that my kid who's away at college cannot use 1 of the 3 unused streams I'm paying for.
I suppose they could limit you to one stream, if that makes you happier, but that's the middle ground they've chosen to limit the widespread sharing of passwords while allowing people who cohabitate to share.
I may have to arrive with the guest(s). But I don't have to stay with them. I'm free to leave at any time (even after 5 minutes) and the guest(s) can stay as long as they want or until the museum closes for the day.
If I go visit my kid in college, I can enter my Netflix log-in to watch a movie with her. I'm free to leave at any time during the movie, but my kid technically, per Netflix's ToS, isn't allowed to keep watching the movie/using the service.
That's right.