FEW economic issues have revived as suddenly as antitrust policy. Only weeks ago, excitement about business concentration and the potentialities of vigorous trust-busting seemed, in the words of Historian Richard Hofstadter, "a faded passion." Now the virtues and evils of business bigness are again being fiercely debated, largely for two reasons:
> Two new studies of big business have appeared almost simultaneously. One is a Nader's Raiders report, The Closed Enterprise System, and the other is a widely acclaimed book, America, Inc. (see box). Both argue that giant size gives the biggest U.S....