You can simply only install the Apple App store... There is nothing stopping you from having a phone that has exactly as many app stores as you want on it.
You can have your phone that only uses the apple app store.
> Your rights are not being violated because someone refuses to publish to your specific app store.
> Instead, you can have exactly what you have now. Which is that you can get a phone, and only use the Apple App store.
Today all apps on iPhone have go through Apple App store - this is what I paid for. With many stores some apps on iPhone could be only available only on other stores. This demonstrates that I can't have "exactly what you have now".
> Instead, what you want is to force other people, to do certain things with their own property.
App developers and other large companies want to force Apple to do certain things with their software to modify how things work on my hardware. Nobody forces one to buy iPhone.
Support alternatives like Librem or Pinephone - they are right long term direction.
It seems that after the law passes neither YOU nor Apple will be able to keep vendor A from doing business with customer B which is great because neither of you is a party to the transaction. I understand why you prefer the status quo I don't understand whatsoever why you feel like you have a moral right to prevent this.
You are free to not use other app stores, correct.
Don't use app stores that you don't like.