I am willing to bet you could make a killing off the idea. Sub-Zero and Viking already do these things, I have yet to see one with anything on the front of their refrigerators aside from doors. They're fridges, and nothing else. They also sell for $3-20k, with a good amount of models in the $10k range. No bling or anything fancy, just quality components, quality exterior finishes, and multiple sizes to fit your home or restaurant. If you wanted to keep things classy you could do a stainless interior as well, like the Gaggeneau Fridges. They start above $10k.
I think I'll keep the cost low and maybe spend the $10k on a Barrett 50