I’d imagine that making it a user choice gets around some of the regulatory hurdles in some way. I can see them making a popup in the future to not use third-party cookies anymore (or partition per site them like Firefox does) but then they can say that it’s not Google making these changes, it’s the user making that choice. If you’re right that there’s few that would answer yes, then it gets them the same effective result for most users without being seen to force a change on their competitors in the ad industry.

What’s the UK CMA going to do, argue that users shouldn’t be given choices about how they are tracked or how their own browser operates?