> - Access your entire games library from any Xbox One ... > > while you are logged in at your friend’s house, you can play your games.

This applies for all PSN games also.

> - Share access to your games with everyone inside your home .. Anyone can play your games on your console--regardless of whether you are logged in or their relationship to you.

Interesting. But I'm not sure the value. How many homes have > 1 unit.

> Give your family access to your entire games library anytime ... Up to ten members of your family can log in and play from your shared games library on any Xbox One.

How does one define family? How do they prove it