one day customers will get pissed off enough to actually do something about how AT&T and Comcast take you for granted and are greedy for more and more revenue with the least amount of invesment in infrastructure. most notable, look at at&t's press releases and corporate behavior 2005 - 2011
implementation of cablemodem and dsl networks have been done on the extreme cheap, especially where you have AT&T and Comcasts footprint. without another carrier deploying their own networks these two companies will continue their self interest behavior at the expense of customers.
how many YEARS will go by before something changes?
have a look at your duopoly, see if you like it..