When they really need to. But they'll fight it hard! Apple's business model is to lock everything down -- very closed indeed. This does not align with the goals of bitcoin, at least, how I perceive them.
tl;dr Apple = closed. BTC = open.
No lol, why would they accept Bitcoin at and time? They would be the last people to do that.
You do realise apple products are made for people who are just comfortable in their own little world, and aren't willing to take risks or explore new things ( a bit stereotypical, but somewhat true). Bitcoin would be the opposite in just about every aspect.