August 7, 2026 · 5 min read
Product-Led Growth Isn't Free, It Just Moves the Cost Elsewhere
PLG gets pitched as a way to grow without a sales team's cost structure. It doesn't remove the cost. It moves it into product, support, and infrastructure, and that invoice is easy to miss.
I've worked with two early-stage companies that pitched product-led growth to their board as the cheap alternative to a sales team. Both were right that they didn't need to hire a sales team as early. Both were wrong that this made growth cheap — it just moved the spend into line items that don't show up on the same slide as 'sales headcount.'
Where the cost actually goes
Self-serve onboarding has to be good enough to replace what a sales engineer or customer success manager would normally explain in a call — that means real product investment, not a one-time build. Support volume from self-serve users who never talked to anyone before signing up tends to run higher per account than from sales-assisted accounts who got pre-qualified and pre-educated during the sales process. Free-tier infrastructure cost scales with signups regardless of whether those signups ever convert, which a sales-led motion simply doesn't expose you to in the same way.
PLG doesn't remove the cost of growth. It relocates it from a sales commission line to a product and support budget, where it's much easier to underfund by accident.
Where I've actually seen it go wrong
- Treating onboarding as a one-time build rather than an ongoing product investment that needs the same iteration discipline as any core feature.
- Understaffing support for a self-serve motion, assuming lower touch means lower support need, when it's often the opposite because users have no one walking them through anything.
- Not budgeting free-tier infrastructure cost against the conversion rate it actually produces, leading to a free tier that quietly becomes a cost center with no plan to fix it.
- Measuring PLG success purely on signup volume, without tracking the support and infrastructure cost per signup against the sales-led cost per acquired customer it's being compared to.
PLG is a legitimate growth motion with real advantages — I'm not arguing against it. I'm arguing against pitching it internally as the cheap option, because the board that approves it on that basis will be the same board asking in a year why support costs grew faster than revenue.