An eventuality..
In the late 90's the CIA had fiber to the security guard's terminals. Yes, Fiber optic connectivity to a windows NT/9X desktop! I noticed this when checking into a facility and thought to myself, it was wicked cool.
This is when folks were barely at 100MbE, many still at 10MbE. I would give users a "speed boost," moving them from half-duplex to full duplex. I was converting folks off BNC and token ring in my current job, over to ethernet.
Folks were pre-wiring CAT6 10yrs ago for the impending 10GbE rush in homes.. And now we're predicting FTTR. Pretty sure this is no different than our previous past predictions and motions. We don't need it, the infrastructure isn't quite there yet or the cost ratio for commercial/residential purposes; but eventually it'll be figured out and marketed and sold and be the norm.