HOW AT&T CONQUERED THE 20TH CENTURY
Wired, Matthew Laser, Sept. 3, 2011
https://www.wired.com/2011/09/att-conquered-20th-century/
After fighting a federal antitrust suit for six years, AT&T agreed to divest itself of its seven regional Bell carriers, retaining only its long distance system, and winning the right to go into the computer business.