Spring-loaded home wiring system

...If not for the fact that it were contained in a tube.

I envision that for all non-critical wiring systems, there could be a way of passing extended cables and wires through the walls if you would like to place an item on a different wall than the one with the appropriate socket. For example, the cable output is on one wall, but you want to put the TV on the other wall. So you connect an extension to the cable slot, and then insert the cord into a tube built into the wall, push a button, and the cord is launched toward the end of the wall (provided that it is long enough; if not, the launch ends). Do this for the next wall and then pick up the cord where you need it at a pre-placed grab bay, and then use it on your TV.

Basically, insert launching tubes (similar to the spring-loaded ball guns that kids play with) into walls and allow people a way to launch cords through walls one at a time. Have bays at various locations on all walls that can accept cord entry. Each individual cord tube must run at the same height throughout, unless you are willing to shoot the cord vertically up a wall. There also must be several cord tubes (one per cord) but they can all be driven by the same spring launch bay. It's cheaper than pneumatics (which I think could also serve this purpose in a home framework- this would be the Gold option for the wiring) and I think it would work.

Or to retrofit the house, if you can't rewire the whole shamoozle, attach a few tubes to the walls running through the house, and you can inconspicuously ship wires around through various areas of the home. The goal is primarily ease of transport, with a more professional appearance than exposed wires or covered wires.

Besides cable or external antenna inputs, this would also allow people to wire in a nice home network. And it would save some drilling through the walls by doing it ahead of time in a new house.