Grass, weed, cannabis: Smoking dope is set to become legal in Germany. It’s unclear when the new law will come into force, but it’s already apparent who will benefit financially — and who won’t. Dirk Rehahn isn’t popping the champagne corks just yet. “I still…

Dirk Rehahn isn’t popping the champagne corks just yet. “I still don’t quite dare celebrate,” the entrepreneur says. He already has good reason to, though: Traffic to his two websites has increased m…