Except for Maps, Gmail, Messages, Photos, Search, and (due to the servicing model) Play.

I could be forgetting a few.

Maps, at least, I've completely replaced with Citymapper. Due to its goal it doesn't work everywhere, but in a supported area I've found it to be completely superior to Google Maps. So there is competition.

Citymapper uses Google Maps. In what way is it competition?

I suppose it's competition in urban navigation, but not competition in map tiles.

They use Google Maps so it’s worse for Google vs using Maps directly. But you’re still using them.

Did you ever try printing a Google map? They're unreadable and the roads are nearly invisible.

Um...no? Why would I do that? It's on my phone...with a moving dot where I am on the map, and a tiny lady in there that can tell me when to turn. I'm genuinely confused by this...what are you getting at?

I happen to like a large printed map, and they do support it in the hamburger menu. The result is unusable though. I dont have a data plan, but I'll look into the latest OSM which has directions.

Pretty good for the other 99.98% of use cases though. Your objection doesn't refute "Maps gets used a lot on Android" in any case.