I know there is the outfit called Shapeways and they will print out customer's designs, and have a variety of choices in mediums to choose from.
There are 3D scanners on the market, but I haven't looked into prices or quality. That said, I don't know how willing a printing business would be to copy or print a subject that might have copy right issues.
As far as the future giving us our own individual choice on kit scale, it's likely, but I just don't see the owner of the design parting off with the blueprints. Most likely, they (or third party) will custom print to your scale choice.
regards,
Jack