The U.S. is “naive” about China’s growing edge in technology and overestimates the willingness of its allies to confront Beijing, the former president and CEO of General Electric said on Monday. China presents a more sophisticated threat to the U.S. tech industry than many U.S. stakeholders give it credit for, former GE CEO Jack Immelt said in an interview Monday with the Washington Post’s David Ignatius. “The discussion about China in the U.S. is still a little bit naive,” Immelt...