In the process of considering how best to provide universal connectivity, powerline networking was apparently not considered although it reaches very nearly "100% of civic addresses" in Nova Scotia and has up to a thousand times higher maximum throughput (up to half a gigabit per second using G.hn or IEEE 1901 on Atheros 7400 or Gigle Networks 541 chips).
Proprietary extensions that have added frame bursting to the wireless standards include Nitro from Intersil, Super G from Atheros, Xpress from Broadcom.