> It's hard to craft good law when the mismatch between public stated desire and public behavior is so wide.

Some people would also sell their right to vote for $5 if that was legal. It's not hard to make such a law. You simply could make it illegal e.g. to offer money for PII during a purchase that doesn't strictly require it. Or to not respect the automatically transmitted cookie choice. Those who oppose such laws are the lobbyists of the big companies, not "the people".