Henry (link bait) Blodget:
The Android gains matter because technology platform markets tend to standardize around a single dominant platform (see Windows in PCs, Facebook in social, Google in search). And the more dominant the platform becomes, the more value it becomes. The network effect kicks in, and developers building products designed to work with the platform devote more and more of their energy to the platform. The reward for building and working with other platforms, meanwhile, drops, and gradually developers stop developing for them.
I may be way off base here, but seems to me that developers like to develop for platforms that earn them a living — and right now that’s still iOS, not Android. ((Though there are exceptions to every rule, in general iOS is still a far more lucrative platform.)) I mean it’s rare you see an hot new app got to Android first, before it comes to iOS — regardless of market share.