Photo-Illustration: Vulture; Photo: Ali Goldstein/NBCUniversal via Getty Images The Kabletown era of NBC is coming to a close — or, at the very least, entering a much different phase. Back in December 2009, in a development foretold by the seers at 30 Rock , Philadelphia-based telecom giant Comcast announced the deal that would eventually lead to it taking full control of the storied Peacock network and its array of cable channels. On Tuesday, almost exactly 15 years later, Comcast said it was