

Ram is cheap
Kind of divering from the larger point, but that’s true — RAM prices haven’t gone up as much as other things have over the years. I do kind of wonder if there are things that game engines could do to take advantage of more memory.
I think that some of this is making games that will run on both consoles and PCs, where consoles have a pretty hard cap on how much memory they can have, so any work that gets put into improving high-memory stuff is something that console players won’t see.
checks Wikipedia
The XBox Series X has 16GB of unified memory.
The Playstation 5 Pro has 16GB of unified memory and 2GB of system memory.
You can get a desktop with 256GB of memory today, about 14 times that.
Would have to be something that doesn’t require a lot of extra dev time or testing. Can’t do more geometry, I think, because that’d need memory on the GPU.
considers
Maybe something where the game can dynamically render something expensive at high resolution, and then move it into video memory.
Like, Fallout 76 uses, IIRC, statically-rendered billboards of the 3D world for distant terrain features, like, stuff in neighboring and further off cells. You’re gonna have a fixed-size set of those loaded into VRAM at any one time. But you could cut the size of a given area that uses one set of billboards, and keep them preloaded in system memory.
Or…I don’t know if game systems can generate simpler-geometry level-of-detail (LOD) objects in the distance or if human modelers still have to do that by hand. But if they can do it procedurally, increasing the number of LOD levels should just increase storage space, and keeping more preloaded in RAM just require more RAM. You only have one level in VRAM at a time, so it doesn’t increase demand for VRAM. That’d provide for smoother transitions as distant objects come closer.
If all it takes to get someone to believe something is to flatter them and agree with them, it does kind of explain how people manage to sell people on all kinds of crazy things.