The time that an “App Store” existed and didn’t have adverts was very minimal. Like OP I haven’t browsed the iPhone App Store for over a decade. Occasionally a web page will send me to their app directly and if I want it (very rare) I’ll get it, same with installing specific apps - Spotify, YouTube, WhatsApp etc.

Apple used to charge money for a premium product where the customers were customers and not the product. It’s moving away from that.