Shopify (TSX:SHOP) stock and Alibaba (NYSE:BABA) stock are similar in many ways. Which is the better buy? Shopify (TSX:SHOP) stock and Alibaba (NYSE:BABA) stock are similar in many ways. Both are e-commerce companies. Both are involved in the payments business. And both are the largest tech companies (as measured by customer count) in their countries of origin. As similar as Shopify and Alibaba are, there are many differences between the two companies as well. Shopify provides infrastructure for people to host their own e-commerce websites, Alibaba provides platforms for people to buy and sell on directly. So, there are enough…