All I have to say is I guess At&t has it right with their network. Not to go all out with big spending. Rather upgrade the network and keep costs lower.
You failed to consider that AT&T doesn't compete with FIOS, it competes with the cable companies and the cable companies have DOCSIS3.0.
If you compare FTTN 18 or 24 Mbps to DOCSIS3.0 50 and 100 Mbps it is a no contest.
The only winners here are the cable companies. FIOS failed because their technology is expensive, uverse FTTN failed because their technology is cheap and an under performer.