Why Would you ever place all of your eggs in one basket?
Flexion helps developers minimize this risk by working in more channels. Being too dependent on Google Play means that they are exposed to technical bugs, changes in policies and other unexpected events.
Yesterday PocketGamer ran a story reporting on a large drop in downloads in Google Play after a recent change in that store. The implications were especially bad for indie developers. Head over to PocketGamer.biz for the full story.