Since Google has cookies dropped by google.com properties that they can use for user tracking, I'm surprised they haven't worked harder to reduce the effectiven

Since Google has cookies dropped by google.com properties that they can use for user tracking, I'm surprised they haven't worked harder to reduce the effectiveness of fingerprinting in Chrome. They could make user tracking more difficult for ad companies that don't have cookies dropped by sites as popular as google.com while accurately marketing the Chrome changes as improving user privacy.