In the same way that people have "known" for decades that smoking causes cancer and smoked anyway, however efforts to keep that knowledge at the forefront of pe

In the same way that people have "known" for decades that smoking causes cancer and smoked anyway, however efforts to keep that knowledge at the forefront of people's minds at the point of consumption by requiring extremely clear messaging on cigarette packaging (in countries other than the US) have been shown to decrease smoking rates. If these companies were required to put up a big banner before you check out saying "By purchasing this and giving us your data we have the right to sell it to whoever we want" with examples of how the data may be misused by bad actors people may think twice. Not everyone will, but I suspect it would be more effective than you think