I’m not a fan of my evil overlord cable modem/TV/phone provider, Comcast, but…
Can you say 50 megabits per second? And, with speeds up to 100 megabits per second available by the end of the year? Take that FiOS!
My guess is that Verizon can go up to 5 gigabits per second by 2015 before they have to start replacing switches and 2020 before more digging. Comcast on the other hand probably only has about 300-400 megabits (perhaps in 2010) before they need to dig up our lawns again.