I know.

One can't just bolt HBM onto something else, no matter how skilled the hacker is. It needs an interposer to connect it because the pin pitch is so small, and it needs a memory controller that supports it.

EDIT: And if you're talking about AMD using it in gaming GPUs or some other hardware, unfortunately the design pipeline is very long. If AMD decided to make a gaming HBM GPU right this second, and rushed it, it would take years to design it and get it in production.