I don't see why Google would sell your location data to others. Store your location data? Absolutely. Use your location data? Absolutely. Target ads to you base

I don't see why Google would sell your location data to others. Store your location data? Absolutely. Use your location data? Absolutely. Target ads to you based on your location data? Absolutely. Sell it to others, though? No way. Why would they give away their valuable advantage? It's very much in their interest to stop anybody else from getting that information, and I trust them to be self-interested.