I', all for competition. Tell Apple they should break off the App Store into another business... objection from me. But to force a company to run the App Store, with all the associated costs that go with it, for free, is thievery and unethical.
Apple may likely start charging anyone who has an app a feee to list it. Is that really good for consumers? No, it just shifts the scale wherein Apple doesn't make a commission on each charge.
No one is forcing Apple to run their app store for free or run an app store at all. They can choose to charge or not charge whatever they want for app listings, ads, developer fees, commissions, etc. but at least those things will now be based on competition in more of a free and open market instead of more of a closed market with restrictions on app access.
The result being that everyone will pay for the benefits of the few. Or, put another way, everyone suffers equally: socialism defined.
Again, capitalism is about open competition. Apple, by restricting sideloading, alternative app stores, alternative browser engines, etc. on its dominant mobile OS, is restricting open competition.