One of the sessions at the FISPA event in Tunica, Miss. last month was a session by Brian Worthen, CEO of Mammoth Networks, a CLEC that started in the dial-up days. I think more attendees should have sat in on the session because Brian spoke about keeping ahead of the wave. I guess he is doing that.
"Mammoth Networks, a facilities-based aggregator of fiber and data circuits, today announced that it has surpassed 21,000 DSLs on its network and now supports more than 160 Service Providers across the United States. These milestones were achieved five years after starting the business." [source]