2 The technology giants that shape so much of our lives dominate in yet another way: They lead the pack of the country's best-run companies. In a year when the coronavirus pandemic has devastated large swaths of the U.S. economy and reconfigured the ways millions of Americans shop, work, communicate and learn, tech stalwarts have remained in the uppermost echelon of the Management Top 250, an annual ranking based on the principles of the late management guru Peter Drucker. In the 2020 lineup, Microsoft Corp. unseated Amazon.com Inc. as No. 1 by performing consistently well across each of the ...