A Vibe-Coded Clone Isn't the Moat

If you can vibe-code a working clone of a software product in a weekend, the interesting question isn't "how fast was that." It's what the speed tells you about what you were about to pay for. A PE firm doing exactly this to size up takeover targets is the cleanest version of that question I've seen.

The reporting frames it as diligence efficiency: recreate the product, stress-test the competitive advantage, move faster. But that's not what's actually happening. This is a valuation tool, not a speed tool. When a prototype reproduces the core functionality quickly, the moat that justified the multiple looks thinner than the seller's deck claims, and the buyer now has a number to argue with.

Here's where I'd slow the celebration down. A vibe-coded replica copies surface features. It does not copy the data network effects, the dozen brittle integrations, the years of institutional adoption that make switching painful. Those are usually the actual moat. Reproducing the screens is for spikes and prototypes, not for proving a company is defensible.

Replicating a product in a weekend proves the features were cheap. It says almost nothing about why anyone stays.

So the method is sharp and dangerous at once. Used well, it's the "three days to fifteen minutes" of diligence: concrete, falsifiable, a real before-and-after on a specific claim. Used lazily, it conflates replicable with weak and talks a good asset down because the demo was easy.

I don't know yet how often the clone fools the people running it into thinking they've found the moat when they've only found the UI. That gap is the whole game.

What I'm confident about: the firms that haven't built this capability are the ones still taking the seller's moat narrative at face value, and paying for it.