You can't install your own apps. Safari is not fit for PWAs. Repairability is not encouraged. All of this is for your own benefit and privacy. Want those things? Go to Android and sacrifice your privacy.
With this approach, Apple comes out looking privacy-focused, justified for their App Store fees, and their stance on right to repair.
I'm not educated enough to know if those restrictions are absolutely needed for privacy or privacy is a blanket excuse for how Apple operates.