Two problems.. The population seems to think the automated systems care more about their privacy
.. they just want to sell you stuff, not sell the history off to some PI that your ex hired ..
And it's a loaded question. Article headlines saying Americans don't want targeted ads, but really it's Americans hate getting spied on. Had you have simply asked the question at hand "would you like advertising that is more likely to be involved or associated with your interests or your current activities."
Arguably they could say your not allowed to show ads about football, when your watching the football game. Cause after all that's targeting your advertisement ..