What makes this case clear cut based on current legislation and precedent? In what sense is “regulation” or new legislation an alternative to antitrust litigati

What makes this case clear cut based on current legislation and precedent? In what sense is “regulation” or new legislation an alternative to antitrust litigation? The U.S. has been dealing with alleged monopolies via protracted trials about highly contestable economic facts, based on generic antitrust legislation, for a century now – Standard Oil, IBM, AT&T, Microsoft ...