""" The main reason why OSX/iOS, Android, and Windows attract more commercial developers is because those platforms have a much greater installed base! """ ...

""" The main reason why OSX/iOS, Android, and Windows attract more commercial developers is because those platforms have a much greater installed base! """ ... and therefore enables developers to make more money! In my opinion it is one of the most important factors right here, combined together with a lot of marketing from companies which own the "platform".