Communications Law Commons^™

Did At&T Die In Vain? An Empirical Comparison Of At&T And Bell Canada, Eli M. Noam

Federal Communications Law Journal

"The Enduring Lessons of the Breakup of AT&T: A Twenty-Five Year Retrospective."' Conference held at the University of Pennsylvania Law School on April 18-19, 2008.

Did the Divestiture of AT&T achieve its purpose? It is helpful to turn to Canada, whose telecommunications industry and regulation were similar but which did not experience a divestiture. Since AT&T was split up in 1982-4, national telecom market concentration in the U.S. has bounced back to a national duopoly structure, with an HHI concentration index of 2,986, higher than for Canada's similar national duopoly with an HHI of 2,463. Local telecom wireline competition is …