Perhaps because copyright infringement is not really a criminal issue but more of a civil law one. Without a private party starting lawsuits on behalf of the copyright owners there is nothing happening. It could be they don't have one.
What about the right of the privacy of communication? Oh, right, it's the state-owned postal services that have to respect that right, and only with regards to the paper letters, not the privately operated ISPs that can (and obliged to) wiretap at the slightest suspicion of crime.
Lobbying is always happening to require ISPs to cooperate though.
- Germany sends letters and fines
- Czech Republic doesn’t send letters or fines
- The Netherlands doesn’t send letters or fines (unless you share an absolutely ludicrous amount)
- Belgium doesn’t send letters or fines
- UK sends letters and fines
- France sends letters (tiny chance of a fine)
- Switzerland doesn’t send letters or fines
Maybe it's changed in very recent times, I wouldn't know.
https://torrentfreak.com/vietnam-could-kill-several-major-pi...
Potential Impact on Major Pirate Sites as Vietnam ISPs Face New Responsibilities, May 12, 2023.
> “Most Voluminous” Copyright Decree Ever Issued in Vietnam
> Global IP services firm Rouse reports that with 8 chapters and 116 articles, Decree 17 is the most voluminous copyright decree ever issued in Vietnam.
> “[T]he Copyright Decree provides significantly detailed guidance on copyright enforcement, especially which disputes can be classified as a copyright dispute, how to establish acts of copyright infringement, and how to calculate damages caused by infringements,” the company reports.
> “The long, detailed section in copyright assessment is also expected to pave the way for the growth of the currently limited copyright assessment services in Vietnam.”
https://torrentfreak.com/potential-impact-on-major-pirate-si...
That all said, I'm always amazed that these sites don't just move to i2p/tor. The torrents themselves have been decentralized with DHT and magnet links for awhile. At the end of the day it seems like they've just been hanging on trying to avoid being so in the shadows that they get less traffic as a result.