The EU is not forcing Apple to do any work. Apple is
choosing to do the work mostly to make competing browsers as limited and non-compelling as possible, while still hoping to stay within the letter of the law. They could in reality comply pretty much by removing their arbitrary restrictions.
> It's a rational choice. Apple isn’t a charity, so why would they spend resources on extra work that they didn’t want to do in the first place, given that work is not required for legal compliance.
I mean, the obvious answer would be that it actually is required. And the outcome of that would be that Apple gets a bunch of bad press, pays a ton in fines, and ends up with a consent decree that restricts them more than just acting in good faith would have.
It feels like a really stupid gamble. There's so little to gain from it, in comparison to the cost if the gamble fails. Apple owns their users, lock, stock and barrel. Basically none of them is going to switch to a competing app store or browser even once those exist. And when the users don't move, neither will the developers.