Google CFO Says They're Working on 10 Gbps Connectivity → Whole point of Passive Optical Network from Area distrobution hub.

The major investment is ONCE, upgrades to N x 100Gbit/sec is a matter of changing of optics at the end points (headed and subscriber unit) once each endpoint hits a price target where it is a short RIO.

When the telco companies yell and scream about the cost of FTTP of Passive they rarely include the cost of maintaining power to the switches on the poles of active networks. They also ignore that covering 50km is trivial with low loss fibers that are fractions of penny per foot in bundles.