For example if you wanted to put in your new directory whether company A has a car park at their premesis or has disabled access etc, you would need to pay somebody to either go there and perform a survey or call them up and ask them. Googles monopoly enables them to just ask the question to everybody that has ever been there and get the data returned back into the system automatically and free.
I see this as anticompetitive and so I choose not to participate.