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.
Oh sweet they finally need someone who can put up a slightly skew shelf while only injuring one finger!