The majority of disc space on a game like CoD is textures, audio and FMV. There’s no compressing 4k textures to get them to a reasonable footprint without losing quality
Some games do that, especially at a generation border. It’s not a ton of extra effort, but it’s low-return: a game doesn’t sell better or get a lot of press for being smaller.
And you can’t make 4k quality optional because…?
Some games do that, especially at a generation border. It’s not a ton of extra effort, but it’s low-return: a game doesn’t sell better or get a lot of press for being smaller.