You are confusing browser TLS and the trusted CA list with general CA in terms of PKI. So no, you are not in control and there is no list. > Does it really mat

You are confusing browser TLS and the trusted CA list with general CA in terms of PKI. So no, you are not in control and there is no list. > Does it really matter how is the DRM implemented? If you want to argue semantics instead of facts and merit: yes. > PKI is also not the only way to implement this. Yes it is. Unless you have some novel method you are about to disclose to the world, in which case, please do, because you'd have the equivalent of a cryptographic holy grail.