Giving data to a private third party does not mean the govt has an automatic right to access it. The Constitution is supposed to restrain the Federal govt not private entities that sell your information for money.
I don't care what some black robed deity from the state has decided in the past. We already know they can and do increase power but expand it DESPITE the restraints of the Constitution. And I am not sure all the facts of an earlier case apply to abuse by setting up a room in places like AT&T to collect your data.
“Experience should teach us to be most on our guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.” — James Madison