This whole NBN system has been a shitty mess from the instant it was conceived on a piece of toilet paper by a previous government. It was conceived by a couple of politicians who then expected their dream to work. As an after thought they decided to include the techos. The end result has been a mess. The thought bubble cost was supposed to be about AU$4 billion IIRC. I think it's now heading towards AU$70 billion and rising like a baking cake.
The original concept was fibre to the home which was costing a lot of money to install the fibre into the houses. A subsequent government (different brand) decided the country could not afford the cost and asked NBN to come up with other ways to make the connection. They came up with the idea of fibre close to the home and existing copper pairs for the last "mile" or few metres.
This, I believe, is what BT is doing in the UK. There was a recent comment by a BT exec that fibre to the home was a noble objective but too costly and too long to implement. However, they are aiming for FTTH in the future but get everybody a service first.
The maximum speed of the services being offered now are fast enough for most people. It appears many people are opting for considerably less than the maximum speed probably because of cost. People can still do a couple of channels of Netflix and browse simultaneously at those lower speeds. If people want it is possible to pay extra and get FTTH. Indeed, why should the rest of Australia subsidise the needs of a few gamers and commercial users.
I have FTTH right into one of the bedroom cupboards and it is good but probably no better than any other service that supplies the data at a speed that you can pay for. I only pay for 25/5 megabits. It works well enough for me. My previous adsl2+ worked OK also.
I live in a new village development and a previous government (same brand who used shit paper for the design) mandated that these developments should have fibre. The house was built with conduit and draw wires all the way from across the street by the developer. When the NBN guy came to do the install about 3 years back it took him about 60 minutes including testing. It would have taken much longer if he had to run the fibre all the way into an existing house. This is where the heavy cost would be that the current government is trying to lower by using existing copper.