That’s the key here - these companies are already selling this information. The govt is just saying “cool, we’ll buy it too”.
A person cannot sell themselves into slavery. Yet we allow the US government to endorse indentured servitude for immigrant labor, because corporations want indentured servitude.
Nor can a US citizen sign away workplace safety rights, legally. Yet we allow US construction companies to rampantly hire off-the-books undocumented labor so that they can freely ignore workplace safety rights, since no one will exist to make claims against them.
It would have been perfectly reasonable for a court to broadly ban surveillance of individuals by telecom companies back in the 1990s, based on the same principles that those courts have willfully violated on behalf of corporations in the other examples above.
Therefore, arguing precedent and consistency is relatively pointless. My point was an exercise in "anything goes, so make the law fit the argument." That's what Chevron would do.
In other words: What's the desired outcome? That corporations cannot wantonly create mass surveillance any more than the government can. So make the law fit the desired reality: extend the 4th amendment to say that privacy is a basic human right and people cannot contractually sign it away any more than they can contractually sign away themselves into forced labor. A clever judge could outlaw H1 visas in the same ruling and get 2 birds with 1 stone.