There is little modern precedent to guide US judges on whether a breakup, like the one the DOJ is proposing in the Google Search antitrust case, is appropriate (Wall Street Journal)

Wall Street Journal:
There is little modern precedent to guide US judges on whether a breakup, like the one the DOJ is proposing in the Google Search antitrust case, is appropriate  —  Antitrust enforcers search for tough remedies to counteract alleged monopoly abuses  —  WASHINGTON—U.S. antitrust enforcers haven't broken up a company in 40 years.