In many cases I think it boils down to "we reject your app because not only we have thought about this use case already but we have a solution in the works, and while it's not ready yet it will probably blow anything else you would have thought about because we know the system in and out, so your app would be dead a few months from now anyway. As you're doing an impressive work on it maybe you can join us to contribute on that work we're doing right now, or be patient about it and concentrate on other areas." In other cases it's probably overzealous employees.

I noticed Apple hate was growing in line with their price history [1] and I understand there will always be baseless haters, but it appeared to really blow out of proportion during last week.

[1] http://www.wolframalpha.com/input/?i=NASDAQ%3AAAPL+history+l...