In addition to Shopify, chatbots have come out over the past 12 months from Instacart, the delivery company; Mercari, a resale platform; Carrefour, a retailer; and Kering, which owns Gucci and Balenciaga. Walmart, Mastercard and Signet Jewelers are also testing chatbots, which may become publicly available as soon as next year. “In a way, it’s …