nobody is going to make a game that requires 24gb of VRAM for its textures and models

false. Texture streaming has been a thing for an eternity. What matters is mainly "can you hold enough in memory to cover streaming latency" (which usually means 'for one frame') - and framerate and resolution targets have plateaued for quite a while now. (Steam hardware survey: 66% of users are still 1080p. Unfortunately no framerate breakdown.)