Right, and of course most (if not all) of those app icons came after Apple announced MobileMe.
Apple released the first iPhone SDK beta on March 6, 2008. [1]
Apple announced MobileMe on June 9, 2008. Both MobileMe and the iPhone App Store launched on the same day, July 11, 2008. [2]
So there was a 3 month period in which some app developer could've independently come up with a cloud themed app icon identical to the one used in MobileMe. I doubt that happened, though.
Apple released the first iPhone SDK beta on March 6, 2008. [1]
Apple announced MobileMe on June 9, 2008. Both MobileMe and the iPhone App Store launched on the same day, July 11, 2008. [2]
So there was a 3 month period in which some app developer could've independently come up with a cloud themed app icon identical to the one used in MobileMe. I doubt that happened, though.
[1] http://en.wikipedia.org/wiki/IPhone_SDK#SDK_release_history
[2] http://en.wikipedia.org/wiki/Mobileme#MobileMe