> the 24GB card that's been sitting in gaming PCs since 2022.
I'd wager most people have less. In 2022 a 3080 might have 12 GB if you were lucky, 10 if you weren't -- and you paid for the privilege. A current RTX 5080 is only 16GB.
The most recent Steam Hardware Survey[0] lists the most popular VRAM at 16GB in 25.9% of users. Second most popular build is 8GB in 25.3%. >=24GB is ~7%, which is quite a bit higher than I expected.
I'm still getting by mostly fine with a 4GB 1650 Super. (2020 vintage.)
In 2021 I was considering getting a then-old K80 card because it had the highest VRAM on the market at 24GB and all newer cards had 8 or 12GB.
(Apparently this is because the K80 is two separate GPUs on one card, but I still think it counts if you only have one slot to put it in)