In a very highly compressed form that might be enough, but "8K" 240Hz lightfield video with say a 1 meter camera sphere is so much data. That's with a restricted FOV. For 360 lightfield it's an absurd amount of data. The file size might end up being larger especially for films with a lot of action or VFX that can't be compressed easily as they're very dynamic. I foresee this utilizing very low latency streaming and predictive algorithms. (Analyzing how the audience watches with eye tracking to best compress scenes might also be required).