How are the blatant anti-competitive practices of Apple just…allowed? How is this even possible?

For example:

• You MUST use Apple’s own apps (iMessage, Phone, etc.) as well as Apple’s own App Store
  • To be fair, the EU is doing work to solve this particular issue…but most of the reforms are only for EU customers
• You have to use WebKit when developing a browser for ~_macOS~ iOS and iPadOS, you can’t use Gecko or Blink
• iOS apps must be developed using XCode IF YOU WANT TO PUBLISH IT ON THE APP STORE, which is only available on MacOS…

~_{That last one is weird. Why can’t you compile Swift outside of MacOS (i.e. third party IDEs)? Why can only XCode do it?}~

edit: Gecko and Blink based browsers are available on macOS. I learnt something new today. Not for iOS or iPadOS though. Also, Xcode is only a requirement for publishing in the App Store. You are able to compile Swift in any OS. You'll just need to distribute the app via sideloading and/or third-party app stores (in the EU)