A typical $5M Shopify brand runs ten to fifteen software subscriptions. Shopify, Klaviyo, Gorgias, ShipStation, Loop, Okendo, Recharge, Postscript, Meta, Google, Triple Whale, and a handful of one-off apps. The stitching between them is duct tape. Every founder we audit has the same story: one app's source-of-truth disagrees with another, and no one has had the time to reconcile them.
Customer support is the second quiet killer. Gorgias or Zendesk is fine. The issue is volume. A brand growing 40% year-over-year does not get to hire a support team. Support either eats into the founder's time or gets outsourced to a VA who cannot actually solve anything. Margins leak both ways.
Ad waste is the third. Every serious brand overspends against stocked-out SKUs, discontinued variants, or cohorts who will never buy again. The marginal-return math on that waste is brutal. Meta and Google will not tell you. Your analytics stack will not tell you unless you have already wired it to.