AT&T is considering acquiring full ownership of the digital media subsidiary Otter Media, which it launched with The Chernin Group back in 2014 – an investment made during a peak in the hysteria about MCN (multi-channel network) that swept the telecom and media sector amid the rise of YouTube’s original programming paradigm shift. At the time, AT&T pledged $500m to the joint venture for developing over-the-top content and services that would appeal to younger viewers. AT&T head Randall Stephenson said the telco planned to leverage the subsequent content and streaming services for delivery across its wireless network to smartphones. That was one of the earliest articulations of Stephenson’s grand vision of pairing content assets with its wireless networks and customers.…