depends, I would not exactly call Apple the best customer. From what I have been reading and Apple history seems to be gaining the reputation to chew up and spit out supplier. Not exactly the best reputation to earn ones self. You can sort of get away with it when you are top dog but when you fall from that perch it can and often times ugly because no one wants to work with you because of the reputation.
Now when could be 15-20 years from now but one thing is for sure Apple will be knock down from it. The top dog is always at some point kick off it is just a question of when. It would not be the first time nor the last time it happens to Apple.
Sure. Who likes dealing with a company that pays you billions of dollars for services. I'm shocked Samsung put up with Apple and their paying them billions of dollars kinda nonsense for this long!