Let us have a conversation about that:
Why should Mark Zuckerberg, et al., know things about you that the government shouldn't?
Or, to put it another way, shouldn't the very thing which represents You, the People, have as much information about you as, "They", the Corporations, do?
After all, Mr. Z, et al., can quite easily tell you things about yourself which, 3 words into the sentence, would give the government a lot of information it needs to optimize itself. To Serve You.
Whereas, the corporate stance is "we will own the consumers, all the consumers, and we will encourage them to endless consume our product", the government stance is: "how do we keep 240million people from cannibalizing themselves".
Mr Z., et al., are being mighty disingenous with this position, because the fact of the whole matter is, the Government would be the absolute BEST customer for him/them/et al., there is no better way to feed a consumer than to get the Government on your side, as we see with Pharmaceuticals, Farming, Oil, etc.
There are multiple points of view in this argument, is all I am trying to say, and by setting the above in word I hope to have at least set the scene for my real, tl;dr, which is this:
Privacy is a trap. Those who are fully exploiting the nature of the system, simply keep no secrets .. and trade never willingly with those who do.