I disagree. It's the over-regulation that calls for these pain in the ass implementations.
On HN it's like - go ahead and let me cable company and cell phone company track / sell and target me on my browsing history (wildly intrusive), but random website doing pet necklaces, try to stay on top of all the popups you need to shove at your users (who will all say OK) so you can show your page.
If you can't share the data you buy up the other companies into groups and then are just using it "yourself" etc.