I mean, you need "Pizza Place" app to order pizza, "TicketMaster" app to order concert tickets, "HotelWhatever" app for hotel reservation, "Parking Meter" app, "Fitness" app, "News" app, etc...
Like I said; rows and rows of information silos taking place on your phone, unable to talk to each other, requiring new account for each of them, entering your credit card again and again. It's terrible.
Now let's say you want to order pizza. Instead of downloading yet another app, you could just type "order pizza" in the search box and an interface is created by the OS and you can chose the pizza place you want, toppings, etc, and the OS handles everything (adresse, payments).
AI is getting more and more capable and I think we reached the end of the "There's an app for that" era. Can Android evolve to this post-app paradigm? I don't think so. Same thing with iOS.
That's why, I think, Google is working on Fuchsia.