We may be witnessing the final chapter of the MCN era. After a few years of YouTube’s multi-channel networks (MCNs) being considered the hottest new acquisition opportunities for traditional media firms like Disney, Discovery and Dream Works, that fever pitch is all but wound down, and now these legacy media firms are left with oodles of Web video content creators and digital networks that aren’t proving to be quite as lucrative as initially hoped. The most obvious case of MCN buyer’s remorse comes from Disney, which purchased Maker Studios for $500 million – $675 million when it was all said done – in 2014. Disney has been unsure how to proceed with the acquisition since day one. Initially, Disney seemed…