The iPhone is Apple's product that uses its own hardware and software. They have spent billions on developing the product, the App Store, developer APIs and marketing.
What right does anyone, including governments, have to say Apple how Apple does business, I don't hear customers complaining, it is companies like Spotify and Epic games that are complaining, because they have to pay commission on sales to Apple for using the App Store.
If Apple had not created the App Store they would not have made the profits that have done off Apple.
I have worked in the computer software industry for 30+ years and we had to give a minimum of 30% discount to resellers to sell our software. If we went through a large distributer it could be up to 60%.
Even if Apple had reduced their commission to say 10% the likes of Spotify and Epic would have still complained.
Well if you dont like paying commission to Apple stick to Android where you still have to pay commission and a larger market.
If iOs was on all the phone manufactures phone's then I could understand the complaints as they then would have have been another Microsoft in the respect of a monopoly.
I for one will not use third party stores, I want Apple's security.