YMMV...
Just my $0.02.
I was in central Paris the other day, searched for "Opera" and got "This place does not exist" as an answer. Google Maps will never show such inept behaviours and feels overall like a smarter tool. It better understands human language, has a better database on POI, better geolocation of those POI, usable transit directions with live updates (in London, using Google vs Apple Maps saves you about 20 minutes in my experience), Uber and other transports integration, and some very useful functionalities (i.e. Street View). I don't think that the underlying maps data is vastly superior on the Google product vs the Apple one, but Google makes a much, much more natural and efficient use of it. Google maps "just works". Even the iOS 3 version of Google Maps was more reliable and less frustrating than iOS9's Apple maps.
I tried that on my iPad, I didn't got anything wrong. (Maybe I'm still in US? )
But Apple did have the best POI possible (outside of EU, Here Map is sad. Hong Kong is just a flat plane. Even Yelp has more data)
The problem is, over the year, Google bought most of the POI, kinda like the time Tim Cook buy all the NAND supply in 6 months.
So, the only move for Apple, beside having their own Map POI team, is stopping Google from getting Flyover by buying all 3D camera technology existed (think about it, if Apple put quad camera on their drone, flyover could be more clear, and maybe even work like street view), while glooming Yelp, and other third party developers to replace Google. (In US, Transit beat Google map)
In the meantime, if your store is not listed, you can use MapConnect to claim it in 24 hours, and prevent anyone in the world messing with your place even if you don't do it. (Well, unless you let people dial international phone number on your store phone. )
And don't forget, Apple Map do have crowdsourcing: OpemStreetMap
I'm not saying Apple Maps I better than Google Maps. But Google Maps has some fundamental flaw (unless you are the biggest guy, like Uber, they are not adding you to their system)
And overcoming it, is more challenging and difficult than something Tim could fix by saying "let's open that API) and "let's fire some satellites" (if you haven't notice, flyover is a fix for the satellite monopoly, and it works perfectly for specifically that problem)