> I think you're right about this particular example. But that's because rebelos identified the wrong problem. I would identify a different gag as the problem -- Apple prohibits you from directing your customers to other payment methods.

You're absolutely right that this is another angle that could be looked at. A third argument, particular to Apple, is simply that there is substantial harm to the consumer when a company maintains a stranglehold on software distribution for what might reasonably be considered a general purpose computer.

However, I vehemently disagree with the insinuation that disclosing the fee wouldn't provoke market forces to lower it to some more reasonable percent above cost. Sure it's a duopoly at present, but I suspect that might be enough to get competitive forces working properly.