Agreed. Google Maps isn't just about addresses. For example I just searched for "museum about noodles in tokyo" and it correctly came up with the Shin-Yokohama Ramen Museum. I typed in "mona lisa museum" and it came up with The Louvre.
It's not perfect but it doesn't seem like a map based solely on map data is going to be able to compete with one that has all of the internet behind it.
This is my biggest complaint about Apple Maps on iOS. Searching doesn't work. And if I get an address or name partially correct, Apple Maps usually fails.
Google can find me places of interest, without an exact name or address. That's my most common use case when using navigation on my mobile device.
It's not just maps. No matter where you are searching, Google is very aggressive about trying to figure out what you meant. Almost no one else bothers to try. Amazingly, even Amazon didn't try to correct misspelled product searches until recently (a year or two ago, IIRC).
That's a huge and under-appreciated advantage for Google's mobile apps and services.
It's not perfect but it doesn't seem like a map based solely on map data is going to be able to compete with one that has all of the internet behind it.