I said nothing about corporate customers. I'm talking about individual accounts, and individual devices. Google knows where I go, who I talk to, how long I'm at places, how long I spend in the office, and on, and on, and on. And at an aggregate, they know how busy every shop is, the types of people that visit, etc. They're quite forthright about this. Through personal accounts -- which Google quite openly mines -- Google has an astronomical amount of data about every business.

Google knows more about worker habits than employers. They know more about your city than your municipality. Etc. Etc.