Why do you say it "should" be balanced this way. Is that your gut feeling? A level you have found most profitable through empirical evidence? Or some other reas

Why do you say it "should" be balanced this way. Is that your gut feeling? A level you have found most profitable through empirical evidence? Or some other reason? Not an attack I'm curious as to how one arrives at the level of in app purchases. Reflecting on it myself I feel there is likely a maximal profit level that one can achieve that you should go for. Do you think differently?