I think, with regards to Google, it's all about their business model. Allowing a company to collect data for the sole purpose of personalizing the products you

I think, with regards to Google, it's all about their business model. Allowing a company to collect data for the sole purpose of personalizing the products you bought from them and recommending content is not an unreasonable choice. Google offers personalized services as a vehicle for data collection to fuel a business model where they sell targeted access to you to their other group of customers.