Catching users is of limited interest to most law enforcement, and I suspect especially for Dutch law enforcement.
https://krebsonsecurity.com/2017/07/exclusive-dutch-cops-on-...
"H: Yes, we called them “AlphaBay refugees.” It wasn’t the technical challenge that caused problems. Because this was a police operation, we wanted to keep up with the orders to see if there were any large amounts [of drugs] being ordered to one place, [so that] we could share information with our law enforcement partners internationally."
edit: I knew I saw something about this somewhere earlier today. Still, this proves nothing because it's source less.
https://www.politie.nl/en/news/2017/july/20/underground-hans... "Some 10,000 foreign addresses of Hansa Market buyers were passed on to Europol"
I thought this excerpt was interesting:
"The sale of small quantities of cannabis in coffeeshops is therefore technically an offence, but prosecution proceedings are only instituted if the operator or owner of the shop does not meet the criteria issued by the Prosecutor General:
no more than five grams per person may be sold in any one transaction and the coffeeshop is not allowed to keep more than 500 grams of cannabis in stock;
no hard drugs may be sold; drugs may not be advertised; the coffee shop must not cause any nuisance;
they are not allowed to sell alcoholic beverages; no drugs may be sold to minors (under the age of 18), nor may minors be admitted to the premises."
Could an implicated dealer use the legal defense that they were operating a coffee shop online? (Provided that they didn't sell > 5 grams of cannabis)
[1] http://www.emcdda.europa.eu//html.cfm//index5174EN.html?#
Also, it's also pretty much at the whim of the public prosecutor whether to close coffeeshops for not upholding the unrealistic 500 gram limit (for the amount of shops in densely populated areas other than Amsterdam).