That's my take as well. At some point, they will claim that you cannot use their service without contributing back. If you quibble with them using your info in exchange for using their service, you don't get to use the service. Hence, I don't use their service. I do not trust these companies at all.

At this point, I'm left wondering what is wrong with me that I don't just go with the flow, otherwise, what's wrong with everyone that does.