I would happily pay 100-200k if I could capitalize it on a 30y 0-3% mortgage to bring fiber from a carrier neutral facility (say, the Westin Building in Seattle) to a farm. It's about $10k/km for aerial fiber and $50k/km for buried fiber in most places (far higher in a city, but the distances are shorter.)

There's probably a reasonable market doing this at $10-20k/house. There's clearly a market for multi-family dwellings like condos/apartment buildings (webpass, condointernet, etc. have shown), but maybe the next step will be neighborhoods pre-wired with fiber to some kind of switchbox with your choice of carrier coming in.