NTT needs to get these innovations out of the labs and into commerical production.. The biggest buyers of this cabling would be for international undersea cabling that could have the 1000 fold increase in throughput. As it is, international bandwidth is at a premium and is throttled among the major telecom companies.. imagine getting your full tier capacity to almost any country around the world?!? This cable could ensure that and more..
Also, internet-2 cabling could aggregate with fewer actual fibers-- 1 or 2 vs dozens of fibers multiplexed.
BTW, these are internet backbone aggregation technologies, no actual consumer would see this kind of cabling bandwidth in home local networking equipment for another 20 years.