In the war for context, lots of companies are going after the browser cookie jar.

It makes sense: it's a honeypot of extremely important context.

But if you ever look into your cookie jar, you'll see that it's mostly illegible bits of tokens.

The main value of your cookie jar is it allows you to take actions in that origin with that credential… but that's inherently dangerous (you could take an action that changes state).

It's kind of similar for Apple to "activate" all of the illegible state locked up in the various 3P apps on your device.

Google does have a lot of 1P context on you in their service, structured into their own ontology so they could plausibly extract a lot from it.

However, if they activated all of your decade of prior context that you had stored with different expectations, it would be a News Feed Betrayal but orders of magnitude worse and likely set off a firestorm.