IDC what anyone says, Nvidia is cheaping out on Vram and has for a while. 7 years and no movement for most of the sku's. Imagine if the 1080 shipped with 512 megabytes of vram. AMD cuts costs as hard as anyone and still managed to throw 12 gigs onto a card like the 6700xt, that tells me that's the minimum that a card like that should have.
Hardware doesn't progress as much as we think it does. We're still just using 4 cores and 8 GB texture loads in 2023. But it's so hard to break into the GPU and CPU market, the tech level required to make a competitive entry is staggering and a small handful of companies have the fabs all tied up.
I'm also unsure if any of this matters all that much for games, tripling the visual complexity on screen in a modern game like Hogwarts does next to nothing - we're heavily into diminishing returns with traditional rendering.
If the entire gaming development ecosystem was focused on a high end PC platform for years like they are on say, the PS5 hardware, I do wonder what that game would look like. Some parts of games, if I zoom in, seem to be as busy to look at as their IRL counterpart - yet I'm in no danger of forgetting I'm looking at videogame minutiae