Long review times, the inability to reply to user reviews, getting ridiculous erroneous comments, and lack of manual refunds? Sounds like iOS/Mac App Stores.
That has always been part of the contract you have with them, and was widely criticized when the Amazon Android Store first came out.
It is my understanding that they guarantee a minimum amount of money to you, even if they give it away for free. (Which means they pay you when they give it away.)
They do compensate you for the special promotions. I'm not sure of the percentage but being the free app of the day and getting paid doesn't sound like a bad deal. Unless you are really intent on selling your "I'm Rich!" app to the 10 people you want to buy it.
It also works, which is another point of similarity with Apple's store. Google's market is laughably bad in my experience. Admittedly, I think my experience is worse than most for whatever reason.
