And the distinction is even weirder for hardware - this is like Tesla allowing you to only carry passengers that also own Teslas or pay Musk a fee.
If a store is a enforced monopoly, then it seems like there’s a moral and ethical requirement for it to operate at cost / not for profit. If the government required you to file all your taxes on a portal with a fee, for example, this fee would have to be not for profit to be ethical and moral.
I don’t think Apple is stuck on these grounds, because Spotify and Netflix are on the App Store and don’t pay 30%. They need to formalise the rules under which these apps exist, and let others freely exist under those rules as well.