Comment by tpmoney

    the process can stretch across months or years before developers see any practical benefit, even though the underlying right to interoperability is already supposed to exist

Not that I don’t think Apple is being petulant and maliciously compliant, but just because a politician passes a law declaring something to be so doesn’t mean that it is so. Apple built their platform for years assuming a lot of these things are and would remain private. When you design private APIs and locked down features, you make different choices and design decisions than if you make open APIs. Any interoperability was going to take months or years to get to, no matter what.