Somewhere between $3M and $5M, most Shopify brands hit an invisible wall. The spreadsheet that worked fine at $1M starts producing numbers nobody trusts. Marketing pulls one ROAS, finance pulls another, and the founder ends up refereeing a fight about whose math is right. If you're running ecommerce analytics for a brand doing $5M on Shopify, this is the exact moment the old tools stop being adequate, and the fixes that worked before stop scaling.