In Europe, cross-app, cross-browser & cross-device tracking is on very thin ice legally under the GDPR, so I'm not surprised Apple finally curbs the use of "sticky" identifiers on their devices. Honestly, it's a bit shameful that a device that is marketed as the gold standard in privacy would even support such an identifier in the first place, it has literally no purpose beyond mining peoples' data. Now that the thir…
Having been on both sides of the table, I would slightly disagree here. Fraud prevention for example will get an order of magnitude harder, plus this move will further skew the playing field towards FAANG who have the resources to puzzle the scraps back together for decent conversion tracking with the help of logins, IPs, SDKs with First Party IDs and a massive dose of machine learning.
Apple's privacy changes might seem like a good idea from the outside, but essentially or paradoxically leads to higher entry barriers for new competitors and cement the role the actual players have.
However, we do not have experience with so-called "big tech." It is relatively new, iPhone came to light in 2007. So I regard Apple's measurements as another experiment, and we will see how things further evolve.