Ah I forgot Apple advertises managing SSO as a feature of iOS and not an external service like sane people would.

Well. I guess they'll have to choose between opening it up like every other company does or acknowledge that it's a separate pay for service then.

They do a lot of that kind of thing and my answer for all of it is the same: Open it up to everyone or acknowledge it's a pay-for cloud service that has nothing to do with the actual phone OS. If people have root they can (and will) develop their own services that won't need that which would comply with the DMA.

Yeah, who knows if the EU would see it that way. They may require Apple to provide first-party APIs that are equivalent in power to what they offer developers who submit via the App Store. Either way, my post was pointing out that it is non-trivial engineering effort to do this, and I think that's still the case.

Hell, just releasing my own personal code as open source — auditing it, decoupling libraries, removing internal stuff, it's a huge multi-week effort for me to do. For any company with as much code as Apple, it's pretty daunting

Yeah I just have a hard time feeling sympathetic for Apple. They played the game pathologically and these are the consequences. If they wanted sympathy they should have tried to get along with everyone else.

I don't have sympathy for them. I just happen to agree that it's a lot of engineering work to comply now.

Perhaps if they had opened parts of their infrastructure much earlier, they wouldn't be legally compelled to do it now, and have to invest significant resources to do so.