Colocation was employed, for example, to allow the postdivestiture
long-distance AT&T to share access to certain key assets with the Bell Operating Companies that were being split off.
(249) It is plausible to infer that the Big Three tobacco companies, postdivestiture
oil producers, or major film companies might have an understanding based upon their previous work together.
may of course independently shed light on the
One issue at play was the question of whether postdivestiture
local telephone carriers should be allowed to continue producing Yellow Page directories.
This raises the question, is it still meaningful to compare pre- and postdivestiture
, AT&T chose not to publish its WATS and leased line series, so the weighting method could no longer be used to derive a total minutes of use estimate after 1984.
Long-distance Competition in the United States, 83 AM.
Both Ward  and Kahai, Kaserman, and Mayo , based on an estimate of the price elasticity of AT&T's demand curve, strongly support the conclusion that the postdivestiture
long-distance markets are largely competitive.
Long-Distance Competition in the United States," American Economic Review, 82(2), May 1993, 185-190.
More importantly, the long-term trend in relative input prices does not appear to continue in the postdivestiture
To understand the European telecom manager's past problems, imagine the United States without the Bell system and without postdivestiture
AT&T, MCI or Sprint.
The emphasis in the postdivestiture
era will be on hi-tech innovation, not on such functions as service, customer relations and economy.