Amazon also sells hardware (kindles, echo, sidewalk), has a media platform through Prime, has logistics software for vendor and order fulfillment, in addition y

Amazon also sells hardware (kindles, echo, sidewalk), has a media platform through Prime, has logistics software for vendor and order fulfillment, in addition you are underestimating the cost of running a global e-commerce site (legal complicance, security, privacy, accessibility, etc. are constant technical draws on even established products)