Germany sees sense and legalises cannabis

[Darren L]

On the policing point, I'm inclined to agree, but we shouldn't overlook the likelihood that fields of commercially grown cannabis would be liable to attack and sabotage, either from nimbies, misguided zealots, or OCGs looking to protect their own dominance.

Yes, though it would have to been grown indoors in very large warehouse type structures , a bit like commercial mushrooms.
It wouldn't be a successful outdoor crop given our weather and climate.