For me amazon doesn´t turn any downloads most days 0 downloads, at least on samsung i am seeing some downloads!
I have nearly 10 apps submit to Samsung App store. The download from it sometime bigger than Google Play.
But it change overtime. One of mine drop from 1000/day to 200/day recently.
One more option for you. User spent time on game more more time than on apps. So try to make GAME with Libgdx/Cocos2dx (C++), you can submit to Android, IOS, Web, Windows phone (Only cocos).
Yeah i already thought about that but i am only good at programming and really suck with design/art creation 
Me too, But you can find free resource or buy royal-free to make game, even hire some freelancer from devianart for example.
hahhh…
yeah, we really need to independent from that money sucking market --
my google account got banned, and must pay $65 for new one (because i ordered it from seller here) 
until when this devil circle will rotate? --
pay -> earn -> pay -> earn -> pay -> etc
Does anyone with more apps is using multiple GP dev accounts? I’m thinking about diversification future portfolio, but want to know if does it have sense.