[daft_pink]

If you look at how Google is approaching competing with companies like Apple on Android, or Firefox and Safari on Chrome. It's obvious that the overarching theme of the company is to copy all their security upgrades immediately and create watered down versions of the privacy technology, so they can appear to care about your privacy and compete, but their solutions simply aren't very good at protecting your privacy and there really isn't any good reason other than the truth that they want to appear to care about your privacy, while controlling and developing their technology in such a way that it doesn't protect your privacy as well as the competition or just gives only them access to the info, but protects it from others.

Firefox and Safari blocked third party cookies ages ago.

It's obvoius that we cannot just trust google to control important technologies the way we used to and need consider the competition if we care about privacy.