Well I guess they pay you by letting you use their service. Is it a fair deal? Probably not because why else would they keep you in the dark about it.
Discussion
If it were a fair deal, they'd have narrower margins.
It is hard to tell what they are taking from us, but they are. It is more than our time and our attention. It is also our independence, autonomy, and ultimately, our freedom.
That's not being paid, that's being exploited.