Aren't browsers shifting to a per-domain cookie jar?

While you can never prevent one specific site from tracking you, this still doesn't (directly) allow your activity on Site A to be linked to activity on Site B, does it?

Of course, fingerprinting combined with IP addresses will ultimately allow something that comes very close to it, so the current state (a few hundred trackers per website, all ending up harmlessly incrementing the adblocker's counter) is better for privacy for power-users, but I'm not sure if this is the big "game over".