That should be dealt with by the justice system, not some corporations.
And justice system has teeth because PH is a proper company participating in a financial system. Good luck stopping a criminal in another country profiting from crime by accepting bitcoin
No other position is cohesive.
If you do not do evil, then you have nothing to fear. If you have something to fear despite doing no evil, let's fix the government. This is a human problem and won't be solved with tech.
(And again, it was pretty clear to anyone that there was wrongdoing in this case and PH was going to get sued. I do think it should have been sued anyway, that it was not may have to do with victims not willing to come forward given sensitive nature of the crime, general disinclination of people to deal with dirt, or a good content cleanup job.)
So - if I have to fear being being shutoff from the financial system by private actors who dislike me, despite not having been convicted of a crime, a law to ensure my right to be served.
Interesting choice of examples: the FBI found bitcoin to be very helpful in exactly that context since it gave hard evidence linking criminals together.
https://www.wired.com/story/tracers-in-the-dark-welcome-to-v...
This idea that police agencies haven’t figured out how to talk with their colleagues in other countries is oddly anachronistic given that we have examples going back to before the turn of the previous century.