The problem there is likely to be funding: you’re going to have a hard time finding an investor to dump money into creating something that already exists, and it’s difficult to spin “open hardware” as a selling point to businessmen.

I think it would be really cool if someone came up with an open source full design. An example where this actually happened is those cheap transistor testers you can find all over eBay and Amazon. I’d be willing to be that “someone” someday, but my current focus is on getting my first job so I can’t do it right now.