Why should I need an adblocker app from some third party to which I have to grant full control over my browser? Apple would be enormously popular if they included one by default. Perhaps as an option you could disable. I don't know why all browsers don't do this (well, I know why Chrome doesn't).

Browsers are selected by users, they should have no obligation to show ads.

Brave is the only one doing this right AFAIK.

Almost all the problems with tracking and buying and selling user profiles would end if browsers just didn't show ads.