I think my main question about starting a WISP these days is how the hell can I find out who to talk to about getting access to a certain tower and if there is fiber at the tower available for tie-in.
My grandparents live in a mountain village that gets lots of tourists in the summer, and it's in a valley with a large tower on top of one of the mountains that has los for the entire valley, but I can't seem to figure out who to ask about costs/contracts etc. With the tourist influx though I could easily see it being fairly profitable, and there is no other ISP option besides sat and frontiernet.