I'm thinking historically. Microsoft brought killer apps to the Mac (most notably Office) that helped them learn enough to eventually beat the Mac with an open(

I'm thinking historically. Microsoft brought killer apps to the Mac (most notably Office) that helped them learn enough to eventually beat the Mac with an open(er) platform. This time it is Google bringing (or trying to bring) killer apps to the iPhone (voice search, Maps/Navigation, Google Voice, etc.) with a long-run intention of (among other things) applying what they learn to their open(er) platform.