Why we should worry about Facebook and Google owning our data

why should we care about companies having a lot of data on us? Because it makes large numbers of us vulnerable to exploitation in different ways that can benefit companies and governments, and because the possibilities of what can be achieved with massive quantities of data are largely unknown.
Read more: https://thenextweb.com/insights/2018/04/25/why-should-you-care-if-google-and-facebook-own-your-data/?source=Snapzu