How to Build Successful Cannabis Ecommerce Websites In the case of cannabis ecommerce, the potential is immense. As the number of consumers who are using cannabis increases the market for e-commerce will also grow and make it easier for brands to promote their products. The biggest problem with traditional retail can be the legal structure, and ecommerce provides the best solution. However, just like every new business there are numerous obstacles to conquer before your eCommerce site is an enormous success.