[athenot]

The difficulty here is professional skill entails money, money entails risk management, risk management entails legalities.

The only way in the US is to have a powerful lobby that can fight to ensure broad waivers stand up in court, like the NRA: you can buy a gun and literally shoot yourself in the foot.

But if transaction, money, service, profession are all removed, then under a co-op / non profit this might work. Of course, those structures are also vulnerable to well-funded legal opponents.

Some European countries do provide a framework for this but it's more from a public health perspective and to eliminate the raison-d'être of criminal drug organizations.