The problem there isn't the models, it's consumer hardware. Even 16GB cards aren't the norm, and even with massive improvements in per-parameter performance we probably still need 48GB memory to get models that feel smart enough to trust.
If you scoped it to “average gaming desktop”, double digit VRAM is pretty normal at this point. If costs came down, I imagine the higher end GPUs would start including enough VRAM for 30B-ish models.