Growth industry

The rain in Spain is just another factor of production;

Over the last five years, a silent drug-trafficking revolution has taken root, fostering an internal European market with its own flow of imports and exports.
Spain has not remained untouched by this phenomenon. Spanish marijuana production has increased at least fivefold in the last five years....

Genetic improvements in seeds, advances in hydroponic growing techniques (which don’t require soil) and the existence of small plants able to produce four to six top-quality harvests a year have all given a competitive edge to what one expert has termed “eurocannabis.” And there is already significant proof that Spain has not just positioned itself among the group of the producers but also among the exporters. One indication is the number of confiscated plants. Another is the fact that the police operations that started out discovering small homemade greenhouses are now uncovering almost industrial installations, operated by people with a business plan.

Displacing hashish from North Africa, since it avoids the costs of smuggling it in from across the Mediterranean Sea. Nor is it only in Spain that business is business;

Experts agree that the two biggest marijuana producers are the Netherlands and the UK, where the biggest numbers of plants have been found. Behind them are Poland and Belgium, where between 1,200 and 1,500 production centers were discovered in 2012. 

No word on how many Euros the taxpayers had to put up to discover those production centers. Nor these;

The marijuana consumed in Hungary comes from Vietnamese distributors who have spread production to parts of Slovakia, the Czech Republic and Poland. In this way, both Slovakia and the Czech Republic have become exporters to, among other places, Germany. Vietnamese organizations have also been found in Belgium, Germany, France and the UK. They have very closed and hierarchical structures with their own specialists, including electricians, plumbers and gardeners, and exploit illegal immigrant labor for other tasks.

Under prohibition, man exploits man. Under freedom to market, the reverse will be true.