Not sure why the above got downvoted, it seems to echo the other sentiments.
As a developer I have a hard time imagining building an application that doesn't use data to provide a higher level of experience in some way. Of course there is a very long rabbit hole on how data collected to create a novel experience then gets used in other ways to provide revenue.
We just live in a world where applications are able to hide almost everything that is happening behind the scenes from the user, and advertising drives the majority of free applications, and this opens a gateway to major abuse...
Sure there are a few companies you pay that also collect your data and I wish they didn't but even then they'd raise the price (maybe willing to pay more) if they didn't subside the service via your info