>It has the right to refuse certain kids of apps, like Internet phone software that screws their carrier partners; we can also see it nixing software that could compete with their own services, like an iTunes-rival music store.
Or whatever else it wants to. Will I be able to use iChat voice chat with my iPhone? Don't bet on it.
Go right ahead and learn C in four hours - I think it would still be pretty difficult to use, because I doubt that you could cover enough pointer and memory management intricacy in four hours.