This is only trouble from the point of view of developers. From a user's point of view, I would like all apps to be free! Why wouldn't the App Store gravitate to a model like the internet, where there is tons of cool stuff for free, and my software hardly ever nags me for a dollar. That might be too bad for developers hoping to make money with applications that aren't really groundbreaking, but it might be good for users. There's certainly no shortage of cool free games on the internet.