Yeah I think that's the question. in short it's fishing for a way to make it profitable, whole concept is when we pour enough money, servers, research etc... into it, eventually it will start making money faster than we put into it, and so far, that's not been proven. Que old image of guys digging for diamonds, one walking away just before hitting the diamond jackpot, the other blindly charging towards it.
and of course just like reality, there's no actual way to know if there's even any diamonds... just that we haven't found them yet.