What first comes to my mind is that you don't have to accept Bitcoin; you simply receive it. So, whenever this begins, non-KYC coins will be sent to documented legal addresses. How do you inform your government that these coins are from a customer or a person who intended to expose you to triple fines?
Furthermore, it's just information, portable in every conceivable way from the mind to written text. There will be a shadow system, impossible for anyone to track. Peer-to-peer transactions!
Cypherpunks are also not sleeping!
The world will always have different governmental structures. Some allow, some do not. You can move!
What first comes to my mind is that you don't have to accept Bitcoin; you simply receive it. So, whenever this begins, non-KYC coins will be sent to documented legal addresses. How do you inform your government that these coins are from a customer or a person who intended to expose you to triple fines?