By not true, do you mean that technically, google does not sell your individual data and jealously guards releasing your information to other companies? Knowledge is power and power is control, google will never over release your individual data to anyone else. This is correct.

Google takes your data, and statistically using models and especially the metadata, to create enormous data profiles using your data. They sell these models to companies to advertise and manipulate and control. In theory this is to sell you things. Google also manipulate searches, and what you are allowed to see on any of their sites and products to control you. Collecting and using your data against you for sales and other is the true part. Selling your individual data is not.