but what do you do if that multiplier doesn't appear ? From what I have seen even when Verizon started a massive rollout of FiOS it didn't spur other ISP's to offer a competing service, they just relied on the fact that rolling out to _every_ market would be cost prohibitive. It looks like with Google Fiber the existing ISP's are taking the same track.
Actually, the Cable companies selectively pushed out much faster speeds in markets where FIOS was being rolled out, to suck the oxygen out of the water in those places.
I don't know, my Comcast offerings got substantially better over the last few years before I moved, going from 6/1Mbps to about 20/5, and I could have had well beyond 100Mbps down by the end if I felt like paying for it.
I'm quite aware in both cases, as I have FiOS now, and Comcast was the only game in town at my old place.
My point, which you seem to have missed, or at least not addressed, is that Comcast did substantially improve their offering while Verizon was rolling out FiOS, even though they remained the only real broadband provider in my area.