This is clearly very different from usual permissions and access.

This would be unprecedented access to user data, enabling the most complete user profiling ever.

Ad companies, like Meta and Google, are going to spend huge amounts of money getting agents ready, because there will be a ridiculous amount of money behind all the data they're going slurp up, and the profiles they'll build for you.

Unless, Apple can figure out how to keep the leaches, that have consistently proven to be so, with court cases for receipts, at bay.