In other words, only the anti-steering violated California law, but otherwise, she validated that Apple's business model is reasonable under the law and supported the commission structure, it seems.
That seems like a whole can of worms. How will Apple know what to bill developers for apple sourced transactions? Do they need to build new reporting APIs? Within the next 90 days? Is it the honor system? Will developers raise rates on their sites to cover Apple's commission? Will this all have been moot? What if a developer doesn't pay? Can they be removed? Does apple send them to collections? What does that do to developer relations? Or does Apple abandon commission for external sales they alluded to needing to collect.
Edit to add Tim Cook quote from Epic trial [0]: “IAP helps Apple efficiently collect a commission” — for payment processing, but also customer service and the use of Apple’s intellectual property. Without in-app purchases, “we would have to come up with another system to invoice developers, which I think would be a mess.”
[0] https://www.theverge.com/2021/5/22/22448139/tim-cook-epic-fo...