Dense urban areas are a special case and in these locations it may be possible to roll out your own fiber but the details are going to be very geographically specific (regulatory framework, conduit availability and ownership, etc.).
Sure, that's all true, but dense urban areas let you cover the most people the quickest. And it doesn't explain why CenturyLink's rollout has been a disaster (although with USI undercutting them on price maybe they just gave up).
