The Digital Markets Act (DMA), presumably: the law that forced Apple to allow installing apps from third party sources (though I doubt their current solution is

The Digital Markets Act (DMA), presumably: the law that forced Apple to allow installing apps from third party sources (though I doubt their current solution is compliant). Large vendors (gatekeepers) are not allowed to give themselves benefits that their competitors don't have. A third party alternative must have the ability to compete with the gatekeepers, which means Google isn't allows to treat Google Maps specially, Apple isn't allowed to treat Safari specially, and so on. They can still comply with these laws if they have a quick and accessible method of getting your app store listed in the exemption list (which would quickly run into edge cases from apps like Aurora and the abusive shitstains that install stalkerware), especially if they show their willingness by pre-populating the list with common Play Store alternatives. They could also just disable the feature in EU phones (the way Apple chose to comply with the law) so they don't break the law. Or they could leave the list unpopulated inside the EU, making the OS harder to use for EU users but not exempting themselves as a middle finger to the EU lawmakers (the way Apple tends to comply with these laws).