Yep, that's how the system works. I have no qualms with forcing the richest company in the world to play fair. You may be under the idea that computers are optional - they're not. Almost everyone has a mobile device, even homeless. They're required to participate in government and business. It's how we rent apartments, pay bills and operate in society. The market has become a public problem by apples hand. Markets no longer belong to their creators when they of their own choices create matters of significant public issue. Apple is not special.
We have plenty of precedent from microsoft being forced to allow software before. Apple and friends have lobbied (bribed) heavily for antitrust and antimonopoly to no longer have teeth. If it were 30 years ago apple would have been put through the meat grinder.
If we need the legal right then we'll legislate it.