Who would've thought? This isn’t going to fly with the EU.
Article 5.3 of the Digital Markets Act (DMA): "The gatekeeper shall not prevent business users from offering the same products or services to end users through third-party online intermediation services or through their own direct online sales channel at prices or conditions that are different from those offered through the online intermediation services of the gatekeeper."
Friendly reminder that you can sideload apps without jailbreaking or paying for a dev account using TrollStore, which utilises core trust bugs to bypass/spoof some app validation keys, on a iPhone XR or newer on iOS 14.0 up to 16.6.1. (ANY version for iPhone X and older)
Install guide: Trollstore
There is one aspect people don't really talk about yet, because it is not just about "allowing sideloading". The law says "no self-preferencing". That means that installing an app from for example F-Droid has to take the exact same amount of taps with the exact same UX as installing something from Google Play. Same goes for the App Store. The point is not to allow sideloading, but to erase the word sideloading from the vocabulary of the platform and make it just like Windows in that regard.
This is not just bringing iOS to where Android is, Android is still not compliant yet either. Neither is Windows by the way, because of how they treat Edge.