Comcast started emailing customers about bandwidth caps. That means that some users will be moving to DSL. It also means a good opportunity for YOU. I would be spreading the word that With Joe's ISP, you get the Whole Internet - No Limits.
I realize for Wireless ISP's, Comcast, TWC and Frontier putting caps on means that they can too. But putting usage caps on is different from Network Management - as we will find out in court later this year as Comcast takes the FCC to court.
10 things to know about Broadband by Stacey at GigaOm. I think she got the Last Mile Architecture wrong. DSL has a bottleneck similar to Cable systems on the backhaul out of the neighborhood. In many cases, it is NxT1 from the DSLAM to the CO, not fiber.