Stripe is making significant advancements in its checkout offering, posing a threat to competitors like Shopify.The unbundling of Stripe's payments stack has allowed clients to vault cards and forward them to third parties, impacting companies like VGS.The dynamics of the payments industry involve a mix of competition and cooperation among players, with partnerships forming based on evolving needs.Stripe is transitioning into a full-stack financial services company, leveraging partnerships with third parties to expand its capabilities.