As much as it count my opinion here I think that we should take it as experimental and not expect it, I am able to get from this game almost 10K per day already without "speedzoom", I sometime click over ads hoping that it will increase sustenability and help the devs because elseway they wouldnt be able to profit enough to cover expenses.

That game is in addition awesome and fun, I like to play it.

That's actually my mood of play.