I never said Apple doesn't do anything for their 30%, and I make no judgements about whether it's warranted. My comment was just a thought experiment about how a law firm might approach making a case for damages, given the conversation people were having.

You may buy iTunes cards. I've never bought them, nor even looked at them. I don't know which of us is more representative, but I don't think that invalidates the broad strokes of a test like I describe.