Why did Apple remove the iPhone's headphone jack?

The Verge's Walt Mossberg and Lauren Goode talk with Recode's Kara Swisher and Dan Frommer about Apple's most recent product event, where it unveiled the iPhone 7 and 7 Plus, a new Apple Watch and wireless earbuds called AirPods. Apple has decided that its new iPhones won't have any standard headphone jack at all, meaning buyers have to go wireless or use special cables and dongles made for the company's proprietary Lightning port. Walt says the event represents a big gamble for Cupertino, but there’s one thing everyone sees as a safe bet: Nintendo's upcoming iOS game Super Mario Run.