About 10 times a month, Anthony Leyba climbs up on top of a stranger’s roof or attic to install a TV antenna. That’s about twice as often as he did three years ago, when business picked up again after the U.S. transitioned to digital TV in 2009. Back then, customers bought antennas just to keep getting local TV channels for free. These days, customers call him because they’re cutting cable or satellite TV in favor of internet video, like Netflix or Sling TV. “That’s one of the reasons why I started my company,” said Leyba, owner of Digital Concepts in Denver.