The planned spinoff of NBCU is another step in a long-running realignment of the media and entertainment industry’s power structure NBCU leadership believes its combination of assets is strong enough to compete against bigger rivals. Michael Nagle/Bloomberg News Comcast’s CMCSA 4.53%increase; up pointing triangle decision to split itself into two just created the next big deal magnet in an entertainment industry that is poised for yet another cycle of consolidation.