So you're argument is that an online digital store justifies a higher fee (30% vs 22%) even though it's significantly less expensive for Apple to run a digital

So you're argument is that an online digital store justifies a higher fee (30% vs 22%) even though it's significantly less expensive for Apple to run a digital store than it is for Best Buy to operate physical retail stores? If anything, that's just evidence that Apple is grossing abusing its market position.