ledhead11 :
This narrows the target market down to the individuals who may only need one computer in their lives
I think you overlook noise-sensitive applications, like recording studios & high-end HTPC, and dust-sensitive applications. However, the industrial PC market has plenty of sealed options, for the latter.
So, I don't know if there's a big enough market to support this thing. It
is a neat "what if", and I'm glad to see they could dissipate the better part of 200 W with a (nearly) sealed case that's reasonably small, aesthetically pleasing, and doesn't
look like a giant heatsink.