[yesbabyyes]

We believe it because Google submitted the permissions-policy header / attribute (which allows a site owner to control the permissions for a lot of things apart from interest cohorts, such as geolocation, fullscreen etc) and because we have no choice.

The organization controlling "the thing" is the entity that asked for the feature, so we believe the thing will both know about it and honor it.

[TheRealDunkirk]

Counterpoint: Google makes billions of dollars from tracking and collating behavior across sites. If this impacts revenues more than they would like, the bet's off. There's a breakpoint here, and it's probably lower than people outside the company would expect.

[blauditore]

Are you working at Google and have more insights into this?