Aren't even the "high quality" 4k streams like 15GB/movie? So at $20/TB that's ~$0.30/movie at streaming quality? And you could still have probably better than DVD quality that people used to pay $20 for for like ~2GB, or $0.04.
no it's not 15Gb/movie
A UHD movie with UHD and dolby audio and all that is anywhere from 50 to 70Gb. That's if you rip it straight off the disc.
You can shrink it a little by being pickier about which audio tracks you take, but not much.
You can do other things to it to make it smaller, but then it's not the equivalent of the physical disc
perfectly reasonable quality 4k 10-bit hdr x265 is around 1gb/hr - the files I see that are 10-20x larger webrips from streaming networks seem to mostly contain noise and all compress back down to ~1gb/hr after denoising
A terabyte is no longer $20, unfortunately.