Publishing is an industry based on exploiting those who produce products, while protecting exclusivity with distribution channels and retail outlets in an attempt to stifle competition.
I'll say it again: it's all about the box. Once the box goes, publishers will go. Getting the entire world hooked into broadband tech will accomplish this. When self-publishing becomes viable because distribution is essentially effortless, a renaissance in ALL forms of media will take place. Competition will be between producers of media, not salespeople.
I'm surprised something like EBay for game studios hasn't happened - a single place where media producers can sell their wares using electronic distribution, and the distributor takes a small percentage cut per unit.
It would kill the likes of Ubisoft in a very short time - especially if the median price for an A-grade title is about $20. and the producer keeps 90% of it!