How many of these cables are currently under construction? It's starting to feel like the exponential need for bandwidth means that in fifty year, half of humanity will be only laying cables so that the other half can watch cat videos...
Showing of which: is there really such as a thing as a cable "made for video"? Or do they just mean that they expect to mostly use it to transmit videos? A cable made for video sounds a bit like on of those USB keys "optimized for MP3"...