It???s not only about how many number of devices out there, it???s also about the number of features that are being utilized on each of those devices. E.g. devices like Galaxy SII has that usability thus the impact but compare that with Galaxy y. Choice with Android is true but majority of it is driven by cost, either you accept it or not, that???s the fact. iOS just works, yes it???s a closed world but in that case how many are switching to Linux Desktops just because Windows 7 is closed? If not only about cost, it???s always about cost to usability ratio, if not how come Android isn???t able to make inroads in tablet market? Answer: they aren???t able to compete with iPad usability and of course the price point, and for the same significant usability to price factor, devices like Amazon Fire able to grab market attention.