Yes, Android has big market share in mobile users. I am experienced technical person, who worked with mobile technology since Wince 4.2 phones. To boost any technology it is necessary to keep developers in mind. Developers are main source of your phone applications, To cover the market, easy development was key point. You can start development in Android with a Desktop/Laptop. Where as in case of iPhone(or others) too many things.
If you are planning for your mobile application development studio, First think of its users/customers and list of features which will force them to switch them from legacy tools to your studio.