When the FCC and the Justice Department approved Comcast's 2011 purchase of a controlling stake in NBCUniversal—the cable giant bought the rest of the media giant in 2013 —the company agreed to a variety of conditions designed to prevent it from abusing its market power. "Among other things, both agencies prohibited Comcast from excluding its own services from data caps or metering, and required it to count traffic from competing online video services the same as its own," said Bergmayer. "Comcast's behavior violates the plain terms of its merger commitments and the consent decree." Barbara van Schewick, Director of Stanford Law School's Center for Internet and Society and a leading expert on net neutrality, argues that Stream TV contravenes the FCC's open internet policy because Comcast is engaging in economic discrimination, through zero-rating, and technical discrimination, by giving its own video service preferential treatment.