What’s the difference between YouTube and TV? Two decades ago, that would have been a very easy question to answer. TV was the stuff that was on – you guessed it – television, with its budgets, scripts, multiple camera angles and lights. The first video ever uploaded to YouTube, meanwhile, could never have been mistaken for it. “All right, so here we are in front of the, uh, elephants,” a pixelated young man told the camera. “The cool thing about these guys is that … is that they have really, really, really long, um, trunks.” The video was uploaded on...