SUN VALLEY, ID - JULY 7: (L to R) Shari Redstone, vice chairman of Viacom Inc., and Rob Marcus, Robert 'Rob' Marcus, former chief executive officer of Time Warner Cable, attend the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: (L to R) Michael Ovitz, businessman and co-founder of Creative Arts Agency, and Roger Goodell, commissioner of the National Football League (NFL), attend the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: Oprah Winfrey (C) attends the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: Robert Thompson, chief executive of News Corp., attends the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: Drew Houston, chief executive officer of Dropbox, attends the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: Steve Easterbrook, chief executive officer of McDonald's, attends the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: (L to R) Juliana Awada and Mauricio Macri, president of Argentina, attend the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)

SUN VALLEY, ID - JULY 7: Victor Koo (L), chairman and chief executive officer of Youku Tudou Inc., attends the annual Allen & Company Sun Valley Conference, July 7, 2016 in Sun Valley, Idaho. Every July, some of the world's most wealthy and powerful businesspeople from the media, finance, technology and political spheres converge at the Sun Valley Resort for the exclusive weeklong conference. (Photo by Drew Angerer/Getty Images)