Actually, a lot of people already use bing maps instead of Google maps because of poor quality of Google maps in several European markets.

In my city in northern Germany (300k population), Google hasn’t updated anything since 2004. Refuses to integrate transit, although transit data is available in the requested format.

While Bing and Here maps both have data from last month, with 3D imagery, and realtime transit data. Of course it’s easy to choose which maps app one will use.

And all the nice AI features Google has over Bing & Co – like Google Now’s "you have to go 5min earlier to work because of a traffic jam" obviously don’t work without realtime transit and up-to-date maps data.

And for people on foot/bike there is OpenStreetMap, with way better coverage of parks, foot paths and stuff like that. Often even outside the cities, which are covered nearly perfectly.

Interesting. In Belgium Google Maps is still many times more useful than either Bing or Apple maps. Transit info, realtime traffic, everything.

Same here. Bing imagery is more current. Apple maps has traffic information. Google maps has.... well.... its slow... that is pretty much it.