With respect to device fragmentation on Android: why do you even have to support all the devices with your first game? Thinking of it another way: by developing

With respect to device fragmentation on Android: why do you even have to support all the devices with your first game? Thinking of it another way: by developing for iOS, you "dropped" support for even more Android devices (all of them). So why not just develop for the latest Android version, and expand if your game becomes successful. Is the "iOS grosses more than Android" thing still valid? Have any of your interns made good money with their games?