With streaming ads poised for rapid expansion, the move will hasten advertisers’ exodus away from cable almost altogether.

Comcast is restructuring its portfolio by spinning off a group of NBCUniversal’s cable networks and digital assets into a new independent, publicly traded company. The move, announced Wednesday, includes channels such as MSNBC,

Cable television has long been viewed as a stagnant business, showing little promise for growth over the years. However, Comcast believes it has found a Comcast is spinning off NBCUniversal’s cable television networks into a separate publicly traded company.