If it comes to that, Apple will ban it's use. No biggie. As long as Apple thinks they have no competition to fear they can limit developers as they wish.
So let's all hope Android (or any other mobile platform) is very successful. Yes, you iPhone-Developers, too should wish for Androids success!
I don't think Apple would, or even could ban anything of the sort. I think they want people to develop for iPhone first, and if you want to automatically convert that code to Android and get the cross-platform inferior experience there, then so be it.
I agree with this as well... I'm sure Apple wants more apps for the Mac, and if someone were to create a 3D modeling tool targeted for iPhone apps that could produce cross platform Android apps, they'd welcome it into their Mac family.
I see this the same way. The TOS states that you are not allowed to use an intermediary layer to call the iPhone OS API. A C++ or C library that would abstract the underlying OS' API would clearly be such an intermediary layer and if there would be sort of a QtMobile or wxPhone or whatever framework that would allow you to write cross platform mobile applications in C++, Apple could ban it based on their new rules - even if you were sticking to the approved set of programming languages.
So let's all hope Android (or any other mobile platform) is very successful. Yes, you iPhone-Developers, too should wish for Androids success!