No. Google want people using their services. They don't care if people are using Android or not - Android is simply a platform upon which they can get users to use their services. That is their only vested interest.
Right Android exist because Google feared that people could be locked out of Google services. Google services and access to them, is their first priority.
>I wonder if Google will do that. Surely they want people to use Android, and "better maps on Android", would be a nice selling point.
The more difficult problem will be getting the app past Apple when it so clearly 'duplicates functionality in iOS.' My understanding is that one of the main drivers behind the change on Apple's part is that they wanted to collect user location data (and deprive Google of it), which doesn't do the job if 95% of the user base switches to the Google app straight away.
But it would also be a huge marketing win if Google Maps became the go-to mapping application despite Apple's version being a core application and one of the most trumpeted new features in iOS.
I'm talking about negative press towards Apple being a relative positive for Google. If in 6 months the first thing new iPhone users do is install the Google Maps app and hide the built-in Apple solution, then at least that portion of iOS 6 will be deemed a failure.
On the other hand, they are trying to monetize the Android Maps app by including paid local offers and the like. There's nothing stopping them from trying to make money from the iOS user base the same way.
I wonder if Google will do that. Surely they want people to use Android, and "better maps on Android", would be a nice selling point.