Apple pulls yet another app from the store

I wonder how much more of this kind of behavior the market will allow. How can we depend on an app if it seems that Apple can just pull them from the repository? I wasn't sure I liked the idea of jailbreakers, but now I'm convinced. I was hoping to start developing on the iPhone. I had even priced iBooks so that I could use their fancy dev tools. All of that is gone. I will try to develop something for my w00t toy, I mean phone, but it will not be the way Apple would have liked me to do it.