Are coaxial cable connections not available? These days, you can get 10/1 Gbps with DOCSIS 3.1 (although TWC in USA offers only 300 Mbps), and the standard seems to be improving still.
In some areas they are, but it's a minority of houses in Australia. Telstra and Optus have them.
NBN is decommissioning the Optus HFC network and replacing it with VDSL. Yes, I'm serious.
They're taking over and using the Telstra coaxial network, which should improve upload speeds, but they aren't planning to offer anything above 100Mbps (about 94 actual throughput) on it. They're replacing the DOCSIS 3.0 equipment, but with more DOCSIS 3.0 equipment.
Since Telstra's max plan goes about 115mbit, this is actually a downgrade in speed at my house. I'll be waving 20Mbit/s goodbye.
Only in some parts of my city at least. I'm lucky enough to have HFC to my house in Brisbane, it's expensive but it's a very consistent 35Mb/s down (the upload is barely 1.5Mb/s though).
