Fiona Scott Morton and David Dinielli show how landmark antitrust cases historically have cleared the path for innovation in the next “frontier technology.” But with closing arguments in the search monopoly case just days away, Google threatens to evade this round of rigorous new competition. It reportedly is in talks to place its own artificial intelligence tool on Apple devices as it did in the case of search. Such a maneuver would entrench Google’s search monopoly and place Google in the driver’s seat to steer the development of consumer-facing AI. The authors offer up a menu of steps the government might take now to thwart Google’s new anticompetitive strategy and preserve competition in AI before it’s too late.