Historically, early technology adopters have paid more to get their goodies. Pick a category: Big-screen TV, color TV, Blu-ray player or recorder, car phone, cell phone, digital camera, DVR, high-speed broadband, MP3 player, VHS player, VHS recorder, Walkman, etc., etc., etc. Early adopters paid a price premium. If they want the newest thing, they pay more.
But with iPhone 3GS, that “pay more” comes at a price hard for some people to accept. Many existing US iPhone 3G owners are whining about not being eligible for discounted iPhone 3GS pricing. I say: Tough luck. You want the newest thing, you’re going to have to pay for it.