system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: People should not be shocked by Cambridge Analytica

First, let's look at the act of data collection: Facebook, being a company, has a goal of making money through their revenue streams. Our data is valuable and we already know they sell it (or, anyone who has seen an ad on Facebook should!).

We give up our right to our data once we trade it (our product) as a means of exchange for their service (Facebook).  What happens to it after that is no longer our business - we no longer own it, even if we are continuously creating it.

OK, now let's look at where it gets shady: an app collected data who didn't install it; however, those who didn't install it did agree to be connected via Facebook to people who could (and did) install this or many other apps.

The app that collected the data (allegedly intended for research, originally) then did something else with it it, other than what it said it would: namely, sold it.

Here's the only part in this that I see as an issue: Facebook found out and didn't advise users that their data ended up being used in a way that it wasn't advertised it would be.

That said, I'm still off the opinion that once sold/exchanged we give up our right to what is done with it. I didn't lease the data, I traded it.  

Perhaps the commotion is largely because people now have to face the fact that they're a product and they gave themselves away cheaply. Still, then why not push to be paid to use Facebook, instead of taking your marbles and running home?

Edit: I don't trust entities in positions of power to follow the laws or behave ethically all the time. An abuse of power does not shock or surprise me.
gpt
No, you didn't trade it.  The entire concept behind your personal data, the European Union regulations on personal information (along with much of the world) and arguably US law (much less clear) is that it's _your data_ and you're granting specific use licenses, you always retain the right to have it deleted or corrected and your grants of use are only what you've granted - not some later imagined, not disclosed use.

Why?  The law.