Amazon’s culture is not complimentary to the marijuana industry’s roots and culture. Amazon will not have the lock on “internet retail traffic for weed”, as they do on so many other products and niches.  Margin compression will loom as a big problem for the industry, and for a company that looks for high margins to come in and make a profit on, Amazon may not like what they see in future cannabis margins and profits. If the marijuana vendor is seeing massive margin compression, how can Amazon also find decent margins in listing his product and hosting it in their shipping centers.  You can only bleed so much blood from a stone.