Thanks.
> That is a function of the legal framework and government regulations of each country
I want to add that it can also be built in on a technical level. Some cryptocurrency already does it (I'm not advocating unregulated monetary systems or blockchain technology, I'm just saying it's possible and already done). For example, transactions could be anonymized, with PKI-type keys available only with a court order.
It can be built, it won't be built. There is no material demand or incentive to require building it. Crypto primitives, in this context, are just ceremony on top of legal systems. "You are trying to solve a people and politics problem with technology."
https://xkcd.com/538/