After the iPad announcement in January I bought three books on iPhone and Cocoa development and spent a few weeks learning it before deciding in the end that I just couldn't live in Soviet Apple-land. The technology, sure, no problem -- but the contract terms, well, I thought at first I was going to choke them down, but when it came to actually signing, it felt like my self-respect was on the line.
I'm not upset at their latest whims because they're only more steps down the road I already balked at. They already banned the interpreter, why not ban the compiler? I will never write a native iPhone app except perhaps for hire, or after a regime change.