It's simply not feasible.
Current 3d printing works because you're printing usually one type of material (filament) at a time. A few printers can do two.
But to print a TV? You need plastics, glass, metal, insulators, circuits, etc. It's not going to be done by a printer - it's going to be done by a series of printers in a manufacturing process - not in a home
No, they don't. Look at the VR thread- many domains there could be purchased by companies looking for names or for future products. 3dprintedTV.com has no natural market other than domainers.