Depends on the work around. I don't think it is possible to get between app tracking data from some side channel, Apple will definitely block that through legal if not technical enforcement.

But they can use data from Android to infer user behavior for Apple users.

Also, they can still use tracking data from their own properties (IG, FB, Whatsapp).

Less and less people are using FB .. perhaps IG and Whatsapp yes, although you have to consider that privacy regulations can only get more stringent over time.

Will they go bankrupt ? I don't think so. Will they be able to grow at the rate of the last 10y? I don't think so.

I think they peaked already.

If they grew at the rate of the last 10 years we'd need to make a few extra billion people to use their product.

> Less and less people are using FB

Are we just making things up now? FB users increased over the last quarter and are at an all-time high.

Android is going down the same direction as Apple with the privacy sandbox.

https://blog.google/products/android/introducing-privacy-san...

Yeah but for very different motivations.

Google is doing this because it is like throwing a banana in Mario kart for your competitors to slip on.

If two apps can both identify a user then they will be able to combine that data. Apple took away the one identifier they controlled. What are they going to do next?