Not my downvote, but I suspect people don't like the slippery slope argument ("tracking is omnipresent on the web, therefore it's OK to do it in the real world as well").
Then there's "better shopping experiences" which most people's BS translators will read as "worse shopping experiences / persuading people to spend more than they intended".
Then there's "better shopping experiences" which most people's BS translators will read as "worse shopping experiences / persuading people to spend more than they intended".