A customer is someone who pays for your product, and you pay Google by paying ad impressions as long as you use the service.. Ad impressions are a valuable good

A customer is someone who pays for your product, and you pay Google by paying ad impressions as long as you use the service.. Ad impressions are a valuable good that can be exchanged for money. You being Google's product, that they sold, would imply that Google is guilty of slavery, and that you are now the property of the buyer.