This goes along with the "Stay Weird, Android" article that Gizmodo ran recently. Basically, if you're not the lead dog and the gap is wide enough, you can be really innovative, really embrace risk-taking - because it isn't like you're going to lose your spot at the back of the pack if it isn't a hit. Apple is mature this time around - Android is fairly well established, but still can make some pretty radical changes - Microsoft has a lot of freedom to experiment that they haven't had in decades.