I know some people thought otherwise but short of Apple open sourcing iOS, this was the only realistic outcome. There are quite a lot of phone makers out there who would need years to develop there own iOS, meanwhile phones have been improving year on year for as far as I remember. Therefore, the 'smartphone' would become ubiquitous, basically just the next step up for feature phones (fist they got smaller, then they got screens, then they got mp3 players, then they got WAP, then they got touch screens and proper internet etc.). Android was the clear option for all these companies to start producing smart phones. I think a better measure of what's going on would be consider how iPhone's share of the total mobile phone market has grown.