This is The Stepback , a weekly newsletter breaking down one essential story from the tech world. For more on aviation, air taxis, and Wi-Fi speeds at 30,000 feet, follow Andrew J. Hawkins . The Stepback arrives in our subscribers’ inboxes on Sunday at 8AM ET. Opt in for The Stepback here . How it started Last year, two of the leading air taxi companies in the US, Joby Aviation and Archer Aviation, sued each other , with Joby accusing Archer of corporate espionage and Archer claiming that Joby