Well, there's Bing Maps and Apple Maps and OpenStreetMap. Also, paper maps are still a thing, believe it or not. There's always been map competitors, so your ar

Well, there's Bing Maps and Apple Maps and OpenStreetMap. Also, paper maps are still a thing, believe it or not. There's always been map competitors, so your argument is already a little shaky. However, let's go with the spirit of your argument and say Google is now the only game in town when it comes to maps. What happens is that antitrust law kicks in. The FTC web site has great material explaining how it works. Attempted monopolization with the intent of controlling market price is arguably a black and white violation of the Sherman Act. This would not necessarily require there to be competitors, but would require Google to operate in good faith with the public, similar to public utility companies and even cable providers.