There is a market if you live in Japan have an 8k television set and NHK television which broadcasts 8k movies like 2001 a Space Odyssey. I don’t think that is Disney’s demo.

As for my personal opinion about higher than 24fps I saw the Hobbit in 48 frames per second and it looked horrid like video. I was generally unimpressed they chose to shoot on digital for 3D over film in any case since Lord of the Rings was shot on Super 35.

Honestly anything over 4k seems like overkill for consumers anyway. You can scan higher for sure if your final output is 4K.