@xianc78 @LukeAlmighty DVDs don't have encryption, you can copy straight from them just like (most) CDs. Blu-rays do though.
Turns out with UHD it's a much more weird subject. The only chip manufacturer that was ever capable of decrypting them was Intel. They stopped doing it as of their 11th gen processors. Because of that, a lot of drives were updated to not support the format either, I think. I have a 10th gen so normally it would be fine, but the software to play Blu-rays removed the functionality too. I could try and find an older version of the software, but that means I'd be locked to only watching movies from before 11th gen came out because new keys are always releasing and only a handful of companies actually have the rights to use them.
I think it's probably pressure from movie companies to prevent computers from playing them, or asking for ridiculous amounts of money for decryption keys. It's stupid either way, and yeah... This is why people pirate.
These UHD files are like 60GB, so what I'll probably end up doing is ripping the files off of them since that's still possible, and then burning them to an unencrypted Blu-ray.