The way all of this went for the last few months with them - my theory is that this whole family sharing, every 24 hours check-in system was never actually built anywhere but on paper and on the Q&A page.
They announced it, tried to use PR and positivity at E3 and in interviews to spin it, and wanted to see how extreme the reaction was. If the reactions died down and people accepted the changes with their paltry "benefits" they were offering, they would go ahead with the system.
If after E3 the reaction was still strong enough and pre-orders were affected, they would "pull" all the DRM requirements and save the day.
I just don't see them building something as extensive as this system wide check in and sharing system into the OS only to pull it 3 months later.
I think that the no drm Xbox One always was an option, they just wanted to see if they could get away with always online and no used games. There's obviously no real proof, but I think it totally makes sense, with how strictly defined their narrative was with it at E3 and then a week later when they have pre-order numbers and continuing negative feedback, it's all gone. What do you think?