What makes WebRTC helpful to telco community?

Since Telco has been trying to make video telephony a commercial success since AT&T introduced the Picturephone (pictured) in 1970. Here's [how WebRTC could finally provide the results they want](. http://www.dialogic.com/den/d/b/corporate/archive/2014/04/02/video-telephony-from-the-picturephone-to-webrtc.aspx).