Afaik on Android exactly this happens, consumers can download Whatsapp from google play or if they want, they may sideload it. Epic was not allowed to publish games on app store after avoiding 30% tax, so consumers were not able to install it from app store anyway so again, with this law, consumers in eu that may want to sideload instead of doing nothing at all, will be able to So just as I said, consumer takes decisions what apps to install and how to install them instead of apple. If you don't want to use sideloading - don't use it

You make it sound as if the Apple App Store did not track you.