Or just ban this kind of data collection. Is there any reason anyone would willingly click "Accept" when a website asks to share your data with 500+ partner sites?
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No one wants to be advertised to, but powerful lobbies argue that ending ads will lower consumption and thus harm the economy; and no politician wants to lower GDP.
No one wants to be spied on, but powerful lobbies argue tracking people allow better security; and no politician wants to be soft on crime and terrorism.
Even when you give them the option to pay, with no ads or tracking, the conversion rate is still around 0.5-1%.