Those who give up privacy end up as item in the shopping basket.
Have a closer look of the Terms and Conditions of the most popular internet sites. Collecting your data, even parsing your emails and documents is explicitly allowed. Just to “provide you with the best experience”.

This means that your data is used to personalize your content. It is sold to show you just those ads that might interest you. That is convenient!

But that is just what we know for sure. What else happens with your data?

You think you are a customer but you are the product.

So you have the choice: Either you are sold or you are not using this service.

Or: You hide your data.

Sounds paranoid? The services are free. Those companies makes good profit. What do they sell?