Marijuana in California: will the illegal market coexist with the legal market?

"California, which by one estimate produces seven times more marijuana than it consumes, will probably continue to be a major exporter — illegally — to other states. In part, that is because of the huge incentive to stay in the black market: marijuana on the East Coast sells for several times more than in California."

That's from the NY Times article
Legal Marijuana Is Almost Here. If Only Pot Farmers Were on Board