It happened to me three times on a road trip with my kids this summer. iOS 5 w/ Google Maps backend on my iPad and iPhone.
If I searched the exact address for my hotel, it gave me directions to my hotel. But when I searched for just the hotel name and city, it mapped the destination pin to a "Sponsored Link" for a different hotel that had paid Google for the privilege.
You'll note the lack of outrage on the part of the Google map defenders.
It has never happened to me, and I have used the Maps on the iPhone pretty often for the 4 years I've owned iPhones. That's why there is a lack of outrage on the part of the, "Google map defenders". Apple would do this also in a heartbeat, so why outrage if Apple would also do it.