Guitar Hero Jumps Shark

I'm sorry but two, nay, almost three full retail games release in the span of a year spells one thing... death of a brand. I can't figure out for the life of me why they aren't doing stuff like this with downloadable content(DLC) instead of a $50 retail package... seems a bit near sited. RockBand just cleared 6million in song downloads at 2 bucks a pop, and they aren't going to be doing anything but DLC for the next year. Granted I am holding out hope for a horn and maybe a keytar for the game, at least they are dealing with distribution in a forward thinking approach. Game retailers are starting to freak out, I mean seriously why go to a store when you can get your game of the network. It solves so many issues for software manufactures, piracy and overhead would certainly be lower and that equals cheaper for the end users.