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There is tons of dark fiber, due to the economics of laying cables.

Digging a ditch is expensive. The fiber you put in the ditch is cheap. So if you are already digging a ditch, you load it up with 100x as much fiber as you imagine yourself ever needing in the future.

This is vastly cheaper than digging a second ditch 5-10 years down the line.

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Yeah, but aren't we talking about the "last mile" problem, not about dark fiber? I thought that most of the dark fiber was in long inter-city/state runs, not running down my neighborhood street.

I thought he was referring to dormant fiber that the telco owns that used to be available to third-parties at wholesale rates.

That's exactly what I was talking about.

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