Blu-ray ripping already works
Open source solutions can only rip older titles (I think up to MKBv11), often have trouble with BD+ discs (if they are supported at all), and don't always work.
The one-click ripping is only reliable using closed-source programs, who are not disclosing their secrets for obvious reasons.
I've tried to get my head around it by reading through the Doom9 forum, and the issues are extremely complicated. AACS and BD+ are evil, filthy technologies.
I'll be very happy if one day it all works from MPlayer or VLC, like it does with DVDs, but it's not as easy to crack like CSS was.