Talk of an Apple monopoly is silly. Apple has shown no interest in building budget smartphones. That market, which is hundreds of millions of phones per year, was always going to go to whichever competitor which managed to both copy the iphone the best and kowtow to the carriers. WebOS only met the first criteria, Nokia only the second, Android checked both boxes.
I think there is no chance in hell that an Apple monopoly would ever happened. Apple has never shown interest in that. Even with their tablets they do not.