I feel like anything above 4k is impractical. thats 8,294,400 million pixels and 8k is 33 million. sure thats a near 4x increase, but visually its the exact same. all 8k movies do is allow a higher charge because they can label the movies to be better with their "higher and better" number
It’s how the screen looks paused with your nose up in it.
You could send people 720i over Netflix as long as pausing it would download an 8K still frame; they’d howl how good it was.