Every time a founder tells me their CAC is too high, they hand me the same fix in the same breath: "we just need more budget." It's the most expensive sentence in growth, and almost nobody hears how expensive it is when they say it.
Here's the thing nobody wants to print on the dashboard. If the only lever you know how to pull is "spend more," you don't have a growth engine. You have a meter running. The second you stop feeding it, the number stops moving. That isn't growth. That's rent.
Paid is a tax on having no other idea
I'm not anti-paid. Paid is a perfectly good accelerant for something that already works. The problem is when it's the whole strategy, because then your CAC isn't a marketing number, it's a confession. It's telling you that the only reason a stranger hears about you is that you rented their attention for nine seconds, and you'll have to rent it again tomorrow at a higher price, because so will everyone else bidding on the same keyword.
The auction only goes one direction over time. You are structurally signing up to pay more next quarter for the same outcome. Call that a growth plan if you want. I call it a treadmill with a logo on it.
If the only lever you know is "spend more," you don't have a growth engine. You have a meter running.
The expensive teams are the lazy ones
I lost real money learning this. Built companies, scaled them on paid, watched the numbers look gorgeous right up until the moment they didn't. When the cost of attention climbs and your margin is the thing absorbing it, you find out very fast whether you built an asset or just a habit.
What actually lowers CAC isn't a bigger budget. It's a better idea, executed in public, repeatedly. A point of view people forward. A piece of content that does the selling while you sleep. A founder who is genuinely worth following, so that distribution becomes something you own instead of something you rent.
That's the unglamorous truth: the teams with the lowest CAC usually aren't the ones with the most money. They're the ones who did the harder, slower, more creative work that compounds. Spending is easy. That's exactly why it's crowded, and why it's expensive.
What to build instead
If you want a CAC that drops over time instead of climbing, stop optimising the auction and start building the things that don't sit inside it:
- A real point of view. Not "thought leadership." An actual position that some people disagree with. Agreeable content gets ignored. Disagreeable content gets shared, and sharing is free distribution.
- Owned audience over rented reach. An email list, a following, a community. Channels you can't be priced out of because you aren't bidding for them.
- Content that outlives the campaign. A good essay or tool keeps acquiring customers a year later. A good ad stops the instant the card declines.
- The founder as the channel. People trust a person before they trust a brand. If you're the one with the conviction, be the one with the audience.
None of this is fast. That's the catch, and that's also the moat. The slow, creative work is exactly the work your better-funded competitor will skip, because they can afford to skip it. Right up until they can't.
So the next time someone tells you the budget is the problem, ask the harder question. What would we have to be brave enough to say, build, or believe so that people came to us without being paid to look? That's not a marketing question. That's the whole job.
Alex Mureșan does growth and GTM for founders who'd rather be right early than safe and late.