First the bureaucrats would need to care. That’s a pretty big hump - people don’t like change. Instead of people going “yay, we’ll all finally be on the same connector” you’re going to have people going “no, I already have all of these cables and USB-C is good enough!”
You’ll also need the various players on the other side to invest in development for something new with absolutely no guarantee that the EU will approve it. Honestly, if they wanted to mandate this they should have at least just said it’s in effect for ___ number of years and no longer.