There's a big difference between doing something BECAUSE it is contrary to what the rest of the crowd is doing and doing something that is against the grain because you feel it is the right way to go.
Apple isn't above doing things that at least on the surface seem like they are mimicking the crowd. Social:Ping. Web:cloud tech.
I posit that it's following the MONEY and -opportunity- rather than blindly copying what others have landed as a tenuous beachhead.
The difference is that, usually at least, and there are exceptions here too, (iPod hifi i'm looking at you! http://en.wikipedia....wiki/IPod_Hi-Fi
) once Apple identifies a real opportunity they pick at it and refine it after starting small and getting at the essence of what has interested them.
So yea, it wouldn't seem all that odd to me that Apple gets more into social and cloud and it will seem like they are doing it just because everyone else is.
But to go from a form factor that has been breathlessly described as 'the perfect thing' to bigger just because the monkeys at Motorola thought they could differentiate their phone by making it a little bit bigger and a few other also rans are flocking to it to show how savvy they are? Not so much.
I'm all in on both sides of Apples OSX/iOS ecosystem, but that doesn't mean I blindly buy whatever they put out and it doesn't mean I'm religiously entrenched at the 3.5" form factor of today. If Apple makes a bigger iPhone you can be sure it will be nothing like the bigger Androids that you are a fan of. And I cannot speculate whether that device would captivate me enough to buy one or not but I suspect that they would have to make the form factor different enough to be worth it. I'd have to give it a hard look and evaluate it on it's own merits for being my next phone. I don't like the bigger androids today because of a number of factors:
-The form isn't comfortable in my hands
-The resolution is about equivalent to the iPad and I'd rather have a bigger device with that (OR BETTER!) pixel density or a smaller device with remarkable pixel density, this seems like a poor equivalent for the size
-They tend to eat up more battery life
Could Apple solve these issues and make me happy? Probably. I bet an Android developer who wanted to could too, but I'm not holding my breath for either of them to do so.