That's two components, at least one of which is based on licensed block designs from ARM, who could simply stop licensing them for future use and BAM, no more A series chips can be made. Go on thinking Apple invented everything in the iPhone, really, go ahead, don't let those pesky facts get in the way. Don't get me wrong, I've got a number of apple products and I do love them, but i don't bullshit myself about what Apple actually does as a company. The AC you replied to is absolutely correct.
Actually, Apple has a "Soft Core" ARM license that actually lets them design their own CPUs (and they do), rather than just licensing IP from ARM. Being a founding member in ARM doesn't hurt, either. There are a few other companies that have such a license (Samsung and Qualcomm being two of them, IIRC); but Apple actually does design A-series chips from the CPU-on out.