I agree with Donovan. Your walled garden can grow only as you are able to appeal to everybody. That is the case with iOS devices now, but at one point, the "envy" factor is trumped by things like the price factor or the "closedness" factor. I also agree on the fact that iOS is more polished than Android, but only so much. Android is making great strides in that aspect, and I don't see Apple opening the gates of the walled garden, ever. So that will even things up, eventually. Unless, of course, Apple comes up with a total game changer in the future. Yet I see Apple's innovative streak fizzling out. Did that die with Steve Jobs? Other manufacturers are coming up with exciting products (ASUS Padfone, for example?), and you know that many minds can come up with more neat stuff than one mind only. Time will tell.