I think the solution is pretty clear. * Platforms MUST display the amount of the processing fee taken from the payment in a clearly visible format inside of

I think the solution is pretty clear. * Platforms MUST display the amount of the processing fee taken from the payment in a clearly visible format inside of the app and/or the IAP flow. * Platforms MUST allow developers to implement alternative payment options (potentially cheaper due to lack of additional processing fee). * Platforms MUST allow advertisement of alternative payment options inside of the app and/or the IAP flow. * Platforms are allowed to reject apps if they think their alternative payment options are fraudulent but actionable feedback MUST be given within a reasonable time frame. * Platforms MUST provide a list of trusted payment alternatives which will be unconditionally approved during the app review process. To prevent cartel, the list MUST be periodically audited by FTC. If the convenience from the integrated IAP can justify the 30% fee, the users will keep using it. If not, the price will be brought down. Let the market decide.