The last part on App Tracking Transparency flies over my head

> This very much applies to Facebook’s ad ecosystem, where disparate e-commerce sellers effectively pool all of their conversion data in one place — Facebook — such that they all benefit from better targeting.

It’s not like Amazon has a strong app presence, and all the push they do on black friday and other events to make more users go through their app makes me think it’s a big dnough problem for them to throw real money at it.

In that respect, ad targeting being limited inside apps doesn’t seem like a big deal…am I missing something ?