This is The Stepback , a weekly newsletter breaking down one essential story from the tech world. For more stories on Big Tech versus politics in Washington, DC, follow Tina Nguyen and read Regulator . The Stepback arrives in our subscribers’ inboxes at 8AM ET. Opt in for The Stepback here . How it started A long time ago, in 2004, the Federal Communications Commission laid down a rule designed to prevent a monopoly: No one company could broadcast to more than 39 percent of all the TV