[melesian]

If you visit any store in the EU selling new phones or tablets you will find only USB-C devices for sale. No enforcement required.

What the Chinese do with cheap products sold on AliExpress isn't important. Obliging big manufacturers to adopt common standards reduces environmental waste and helps cut down on gratuitous exploitation of consumers.

You can find plenty of 2nd hand devices for sale with non-USB-C connectors and no, the police, aren't arresting people for selling them, nor is their sale illegal.