Even if somehow EU is able to pull this off it would be a nightmare in terms of user experience. I live in Germany and this is how I would imagine it would work base on my experience in Germany.

1. You first need to install an app (because you want to use tap to pay)

2. Then you need to download another app to authenticate the first app

3. But to set up the 2nd app you need to wait for an actual physical mail which contains a code.

4. Then you set up the 2nd app, but then again it asks for you to do a KYC using your Id Card.

5. Now you need to download another app to do the KYC using your Id, but it asks for another code which you receive by physical mail when you got your Id years ago, but you have no idea where that mail or code is, now you have to request for another code and wait like 2 weeks till you get a physical mail with that code....

.... and the story goes on.