I've seen this several times before where a " " lesser quality hardcopy is better than 4K streamed. The big difference lies in the audio tracks though. Most streaming will compress the living crap out of a movie audio tracks, where the DVD will be for superior. If downloading them (legally or illegally we won't discuss) I always choose the huge 20+GB BR versions because they will be unaltered audio tracks where the 3-10GB web stream versions will have crap compressed lossy audio.
Well said!
When ripping UHD movies, they usually are 40-80GB in size!
Also, the bit rate is substantially higher.
For example, yesterday I watched Mad Max Fury Road...the UHD (4k) version is over 43GB in size with a bitrate of 48Mbps, while the Blu-ray is 22GB in size, with a bitrate of 25Mbps.
We you talk streaming from most of the services, the difference is even greater!
All of that said...you still can get some good looking and sounding titles...they just aren't as good as the UHD disc or a proper ripping of it.
George