> This can be seen in the matching of the cut they take. This is crucial: any efficient market would have them compete on price. Google lowers the fee to 25%,

> This can be seen in the matching of the cut they take. This is crucial: any efficient market would have them compete on price. Google lowers the fee to 25%, developers move over to Google, so Apple has to follow and lower the fee to 20%. untill we reach the price-point that just about matches the costs made. Unless you can argue that this 30% is exactly that lowest price-point: just about covering the hosting, staff and some risk, there is the proof that a monopoly is distorting this efficient market. Proving that the current price is exactly that price-point is probably impossible; we might feel it is far from the actual costs, but we cannot prove it, which is probably one of the reasons this cannot be given as hard proof for a duo/monopoly.