Quality wise, you cant compare at the consumer end. Cable/Netflix/Sat dish HD sucks shit, even 4K variants are shit next to BD releases in picture and sound. If you want to avoid the BD FBI junk and adds, you best bet is 'MakeMKV' It will copy without any transcoding. The true BD .h264 stream of just the movie portion itself copied to your HD within 15 minutes (depends on the speed of you BD-ROM) as a single 18-40gb ***.mkv file. No adds, no warnings, stupid HDCP enable flag disabled so you can use older video projectors before HDCP compliance, streams perfect through any fast enough network connection. Movie pause/seek to any point is instantaneously fast and with a good videoplayer, time-stretch playback I find useful for documentaries. Using a CPU software non-accelerated public domain written to commercial industry spec decoder means guaranteed full picture quality (though such players eats CPU cycles and heats up laptops galore). There is more, but, again, a slim 0.00001% of consumers use a PC as their main video and even have it properly setup to deliver.
4K bluray, with the new HDCP, well, that's currently a new F---fest with proper compatibility and all the variants of extended color gamut features from what I hear, you cant be assured of anything yet, but, I sure in time, it will all iron out. Probably right after it has been hacked...