You are asking for 1TB of RAM. Keying it to M.2 wouldn’t make it any cheaper or better than keying it to regular DDR5. I don’t think that even just a tenth of that would physically fit onto an NVMe drive, even if someone wanted it to.

Put in that context, do you begin to see now why that isn’t a thing that exists?

Polyglotism. Being able to speak every language would be practically a superpower.