There are supply constraints at almost every single step in the GPU supply chain. An earthquake three months ago, production issues, and insatiable demand mean

There are supply constraints at almost every single step in the GPU supply chain. An earthquake three months ago, production issues, and insatiable demand mean that every single GDDR/HBM chip being made at factories already operating at maximum capacity has been sold to a waiting customer. If Nvidia wanted to double the amount of VRAM on their products, the only thing that would happen is the supply of finished products would be halved. No amount of money can fix it, only time.