You can definitely outlaw this. Under GDPR it’s much harder to lawfully collect and sell personal data large scale. Not saying it doesnt happen still but it gives you a legal basis to fight against it — noyb.eu / Max Schremscand others do some excellent important work on that front
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Your point being?
I suspect they mean that while a lot of sites put on a good show of pretending to give you a choice, they probably either ignore your wishes anyway or they make sure to ask you so often that occasionally you’ll forget and they’ll share your data with data brokers anyway.
The problem is currently being addressed at the low level. I think we have to go higher up the food chain and go after the data brokers.