Everyone obsesses over gross margin. It feels like the golden metric.
But high margins can’t save you if acquisition costs are out of control. A business with 90% margins still bleeds out if it takes $5 to earn $1 of revenue. Sometimes lower margins with high volume and fast payback is the healthier business.
Product-led growth shifts the pain
Product-led growth looks ideal: low acquisition cost, viral adoption, scale without a sales team. In practice it often brings lower contract values, higher churn and a heavier support load. It can move the problem from acquisition to retention without making the math better.
The product-led companies that work pair self-serve adoption with strong expansion revenue.
MRR can hide a leaky bucket
Growing monthly recurring revenue feels safe. But if churn outpaces new customers, you’re running in place.
That’s why investors increasingly focus on net revenue retention: are existing customers expanding or shrinking? A healthy subscription business isn’t just adding logos. It’s earning more from the customers it already has.
The real question isn’t any one metric. It’s whether the whole unit, from acquisition through retention, works.
Scorecard