Could Shopify prove to be a recession-proof stock?Concerns about the economy have led to many e-commerce stocks struggling this year. Shares of Shopify (SHOP -0.40%), Wayfair, and Etsy are all down more than 10% in just the past six months. Even the mighty Amazon has barely managed to stay in the green during that stretch.Investors are fearing the worst about a possible economic slowdown next year. But Shopify's management thinks that the company is in a better position than many of its rivals.Shopify has b ...