You want to stop the source, which is that the government and other agencies can purchase surveillance data that would otherwise be disallowed by the 4th amendment. We need to end this 'laundering' of information through third parties, and enforce the constitution by its intent.
Necessary, but not sufficient.
Even if we somehow, perhaps via magic genie-wish, made the government totally disinterested... these systems would still enable dystopian levels of private surveillance and manipulation.
Honestly it should probably just be illegal for anyone, private or public, to engage in mass surveillance (or "data gathering", whatever) of anybody who didn't expressly consent to it. As long as the data exist, they will be abused.
Means of Control by Byron Tau and Surveillance Valley by Yasha Levine. Can’t recommend these books enough for anyone who is skeptical of the above claim.
A significant chunk of the infrastructure that farms data is now from private organizations, who sell that information because it is a source of revenue.
Government is the bogeyman we are afraid of, but ad tech is doing the actual heavy lifting.
100 miles around your border is a constitution free zone anyway.
Not just the government. It shouldn't be possible for any random stalker to find someone's daily movements.