Video Game Accessories

Is it just me, or are there too many video game accessories that are too expensive and take up too much room in our closet? There's Guitar Hero guitars ($40), Rock Band instruments ($130), the new Guitar Hero drums which you CAN'T replace with Rock Band drums (unpriced), Wii Balance Board ($40), and plenty others. Now these are the most expensive ones, but still, why am I paying more than $50 to play ONE game? But for some reason, I can't use a PS2 Guitar Hero controller for a PS3 Guitar Hero. Is it fair to the gamers to make them pay top-dollar to play a game? I didn't buy Rock Band, a game I had been anticipating for a while, because it was $180. And it's not just buy it and it's done. Guitar Hero needs TWO guitars to be able to play with a friend, and these accessories frequently break. And there's no replacement. I just have to hand over another $40 if I want to play again. I know that video games are made to make money, but maybe more people would buy the games if there weren't so many accessories you need to play. The only way I'm going to get my money's worth for each accessory is if they work with every console and game that can use it. And we all know that's not going to happen...