Sony is perhaps the front runner in this, given its large movie studio and music label, but it's not clear that owning these businesses has been a great boon for Sony's electronics or software.

One can also look at the not-that-long-ago "merger" of AOL with Time Warner as another example of a media/tech marriage where the supposed synergy was vastly exaggerated.

I'm not sure I see any reason for another major tech company to leap in to buying huge legacy businesses given the lessons learned by their competitors.