"Aim for 4x ROAS" is the kind of advice that sounds authoritative and means almost nothing. A brand doing $500K a year, a brand doing $5M, and a brand doing $50M are playing completely different games: different fixed costs, different ad spend concentration, different margin cushions. The best ROAS for a $5M Shopify brand isn't the same number that works at any other stage, and treating it like one universal target is how founders end up cutting profitable campaigns or, worse, scaling unprofitable ones.