They definitely charge people to use maps... A lot.
I've observed that as the other search services have improved their free offerings, it has negatively affected what Google can charge to advertise on their search results, which has put pressure on their profitability. So at what dollar cost do the free alternatives become "good enough" and everyone switches?
As an aside, I've already switched to Apple maps because it lets me continue to save favorite places and addresses without having to turn on privacy eroding options (web and location history in Google). But I recognize I maybe unique in that I value that aspect highly.