I think the multi-billion question is, what big thing comes after iPhone and iPad? This is not a very urgent question at the moment, but one can clearly see th

I think the multi-billion question is, what big thing comes after iPhone and iPad? This is not a very urgent question at the moment, but one can clearly see that were Apple content to coast on profits from iPod and Macs alone they would still be a profitable company but a shadow of their current self. My estimate is that it will take 2-3 years for competitors to really start eating into Apple share in phones and tablets. Also, the market will become more mature and people will not rush to upgrade Iphone 6 to Iphone 6s. Or Ipad to new Ipad. I mean once you go retina screen, how do you differentiate the Ipads? Quad core vs Octo core is not going to matter to regular buyer. Currently Apple has great Operations(Cook) and great Design (Ives), the Vision is under the question mark.