In life, momentum is very important. Look at the percentage gain for the competition, its 300%+. Apple has only gained 87%. Sure, Apple has some momentum, but their competition is steamrolling over them.
Today, Apple / iOS is the default standard for everything. However, the more users that Android has, the less important iOS will become. Then we will start to see "The Great iOS Exodus". Developers will favor Android for first -run apps, the ecosystem will become the de facto standard. This will cause many iOS users to move to Android to get the better apps. This process will be self-feeding, the more users leave, the less devs will develop for iOS.
Just remember where you read about The Great iOS Exodus. Its coming....sooner than many think
I'll remember and chuckle... the only thing Android is "steam rollering" is everything but iOS - and iOS is on the same steam roller.
Also... developers will go where the money is and iOS is too big to walk away from and it continues to grow. As does Android... so again, it's going to be companies like Microsoft and RIM who are going to be begging people to look at them.
BTW... why do you continue to think that iOS has to die for Android to live???? There is a huge market for both. I just don't understand why you're so anti-iOS. It's what Google/Android copied for goodness sake.