If they get the read speed up to a couple of GBit/s (~100x current max write speed), 4.8TB might be a good fit for 32k movies.
Of course there are people out there watching 32k movies.
Was 4k not enough?
Am I the only one who's still content with 720p?
The display has some bearing on this. Generally, 1080p is good enough but some cinematography benefits from better resolution and as a result, requires a better display.