The Department of Justice may have taken Netflix chief Reed Hastings’ net neutrality complaints about Comcast as a lot more than just sour grapes. It’s reportedly conducting an investigation into whether Comcast, AT&T and other TV providers are anti-competitive in their data restrictions. The Wall Street Journal cites primary concerns that Comcast’s Xfinity TV cap exemption might unfairly punish competing services, but also claims that officials are worried the caps themselves steer viewers away from internet video, helping the incumbents cling to legacy TV for just a little while longer.