Actual proof of that, especially in regards to one specific app and company I did not even name?
Can *you* prove they *aren't* doing it?
(Facebook, as an example, is not even remotely an ethically acting company. On the contrary, I'd say, and not just for the data sale reasons.)
What difference does that make in this context?
These provide services for free, and by this logic, thus turn their recipients into products. Libertarianism opposes taxes, which pay for the provision of these services.
Does that make the logical analogy clearer?
No, you're comparing apples and oranges.