@tag @torgo also, before anyone mentions that cookie vs. non-cookie tracking is a competition problem, this is from #W3C privacy principles:
"Sharing data between different contexts of a single company can be a privacy violation, just as if the same data were shared between unrelated actors.”
https://w3ctag.github.io/privacy-principles/#context
Turning off 3rd party cookies is good, but good as in "good start" not final outcome
@tag @torgo imho browsers have a more important obligation to block intra-company cross-context tracking, because of centralization risks (DSA compliance is a related issue)