[judge2020]

They would only have no standing on the fact that you can't provide other payment methods in your app. They bring up many complaints in their lawsuit[0], mainly there being no competing app store for iOS and 30% being 10x the 3% most regular payment processors charge for processing and fraud detection. I (and you) obviously can't say whether or not the case would be thrown out in a different situation since it didn't happen, but I don't see why it would be thrown out since both of those points seems fair for a antitrust lawsuit, and 30% of sales is enough to mean millions in potential damages.

0: https://cdn2.unrealengine.com/apple-complaint-734589783.pdf