Well 88 TB can hold lots of movies at the same compression as the 4k UHD BR discs themselves, so no question it's an improvement over current streaming.
That said .....will 5G and higher speed internet streaming eliminate that bottleneckj.
Not for the average budget tho and I'm happy with physical discs and wait for a MiniLED to come to my budget. ( low )
Most of the 4k BR I bought offer superior viewing and I have them when I want them instead of chasing.
We'll see how the later Batman movies which are also dark fare.
The 4K UHD files I'm seeing available are between 17-75GB. Most are in the 35-50GB range.