How to Build Successful Cannabis Ecommerce Websites In the case of cannabis ecommerce, the potential is vast. As the number of consumers who are using cannabis increases the market for e-commerce will also grow and make it easy for brands to advertise their products. The biggest issue with traditional retail has to do with the law, and ecommerce is an excellent solution. But, like any new industry, there are several challenges to overcome before an ecommerce site can become an enormous success.