Really? I rip 4K UHD so I can toss the disc and their crap software in the attic and typically I get 60-80GB per movie. From what I understand, these are 100GB discs right? Are they seriously cutting corners on the quality? If this is the case, now I am royally pissed. I am paying a premium to avoid the Netflix/Streaming compressed garbage and to know that they cut corners here when the whole point is about uncompromised quality...well that is just another blow to any shred of trust I have in these companies.

I mean, the RAW 4k (or 6k or 8k) footage is typically multiple terabytes (almost 15 TB for 2 hours at 8k). That is then compressed down to under a Terabyte for use in the movie theater (typically 200-800GB depending on features and length), and then compressed further to get it onto 100 GB disc. It's important to remember that length is going to play a big part (there is a reason that Snyders Justice League is on 2 discs) and a consistent quality is going to be desired within a catalog.

Yeah it seems like they are not doing their due diligence in terms of codec and compression strategies being used. Obviously we are not going to get uncompressed data(although that would be a dream one day that would probably never happen as resolution will increase with new storage capacities) but I do wonder if they can choose different compression strategies depending on the film. It they are charging premium prices I feel as if it is their responsibility to put in the effort to deliver the best experience that the format is capable of delivering. Otherwise what "value add" is the publisher actually delivering?

Just because something is compressed doesn't mean it's low fidelity. If you're so concerned about your high quality viewing, you should probably spend a few minutes learning the basics. How exactly do you expect 4k@24fps 32 bit color raw to fit in 100GB?