> I think if you explained it to the average iPhone customer you might be shocked they side with Apple. The concept of a platform where for free you can take advantage of it and just make 100% of the revenue without cutting in the owner of the platform is completely alien to how things work in what they consider the real world.

Who is arguing it should be free? Why create a false dichotomy where it's either the status quo (30%) or nothing (0%)?

I'm sure most people would accept a reasonable fee. It's hard to put an exact number on this because it would have emerged organically if Apple actually allowed fair competition in app stores. In the absence of fair competition, the best comparison I can think of is credit card processing which is about 3%

And don't forget that Apple receives enormous benefit from these apps being in their store. If not, consider what would have happened had Apple not allowed any apps in their store. Hint: Android would have eaten the world.