The DMA chills innovation and here is a prime example. For those saying Apple is withholding the feature out of "spite" - no, it's not.
The feature is unavailable to the EU because releasing it there would mean that Apple is required by law to give third-party apps the ability to completely control a person's iPhone remotely - with all the safety, privacy, and security issues that brings. No way Apple ever releases it in the EU under those circumstances.
Then don't install the third-party remote control apps? TeamViewer is not going to force anyone at gunpoint to install an iPhone app.