EU regulation has led to Apple being forced to open up iOS in ways that many never expected, but it’s not done just yet. In an effort to ensure “effective interoperability” with other platforms, the EU wants Apple to make native features of iOS being compatible with Android, including the likes of AirDrop and more.
And if Apple is preventing other competing proprietary systems from working on their platform, do you agree that they should allow those systems to work on their platform?
Apple’s versions aren’t really any better than competing systems (some of which are open) in my experience. They’re just better than the other systems they allow to operate on their devices, which is a way of using their large market share to prevent competition. Apple have used “but muh security!” as a response to letting competing services onto iOS, so the EU are giving them the other option - open up your own standard so others can use it.