Scale · founder · 8 min read

Bain Is Vibecoding Your Competitors to Test If You Have a Moat

Bain is using vibe coding to clone software in M&A diligence — and judge how easily a product can be copied. Here's what that means for your defensibility.

Published June 25, 2026 ·

vibe-coding m-and-a defensibility moat founders private-equity strategy

The same trick you use to spin up an MVP over a weekend is now being used to value — and sometimes kill — software acquisitions. On June 22, the Financial Times reported that Bain & Company has been vibecoding rough replicas of software companies as part of private-equity due diligence. The consultants prompt an AI to rebuild a target’s core product, then ask a blunt question: how hard was that, really?

If a small team can clone the important parts of your product in a few days, the thinking goes, then the code was never the moat. That conclusion can move a deal — the price, the terms, or whether it happens at all.

What Bain is actually doing

This isn’t consultants playing with Lovable on a Friday afternoon. Bain started with a dedicated team of software engineers back in 2023, and the practice has since moved closer to ordinary deal teams as the tools got good enough. They build functional prototypes of a target’s software to evaluate two things: how easily the product could be replicated, and where the real defensibility actually lives.

Rebecca Burack, who runs Bain’s global private-equity practice, described it to the FT as the difference between seeing a company in 2D versus 3D. The replica, she said, helps them “understand whether it is the actual code that is the defensible part of the business or something else.” That last phrase is the whole story. Bain isn’t trying to ship a competitor. They’re trying to find out what you’re really selling.

The timing isn’t a coincidence. KPMG data cited in the same reporting shows the total value of private-equity-led tech, telecom, and media deals fell 69% in Q1 2026 from the prior quarter. When deal flow dries up, buyers get pickier and diligence gets sharper. A cheap, fast way to pressure-test “is this software actually hard to build?” is exactly the kind of tool a cautious acquirer reaches for.

Why this should matter to you even if you’re not selling

You might be years away from an acquisition conversation. Doesn’t matter. The Bain story is a preview of how everyone — investors, acquirers, and competitors — is starting to think about software value now that building the first 80% of a product is cheap.

For most of the last two decades, “we built this and it works” was a defensible position. Shipping was hard, so shipping was the moat. Vibe coding broke that. When an AI can reconstruct a working version of your CRUD app, your dashboard, or your booking flow in an afternoon, the act of having built it stops being proof of anything. The question shifts from can someone build this? to can someone build the parts that actually make it worth money?

That’s a healthier question, and it’s one you should be asking yourself before a Bain team asks it for you.

Where the moat actually lives now

If the code isn’t the defensible part, what is? The honest answer, and the one diligence teams are converging on, is everything around the code:

Data and the network around it. A product that gets better the more it’s used — because of proprietary data, accumulated user behavior, or a two-sided marketplace — can’t be cloned by rebuilding the UI. The replica boots up empty. Yours doesn’t.

Distribution and customer relationships. Switching costs, signed contracts, integrations your customers have wired into their own workflows, a sales motion that took years to tune. None of that shows up in a vibecoded clone. A buyer cloning your software still has to acquire every customer from scratch.

Regulatory position, trust, and brand. In healthcare, finance, or anything compliance-heavy, the certifications and the trust are the product. The software is table stakes. A prototype with no SOC 2, no track record, and no relationships is a demo, not a competitor.

Operational depth. The hard-won knowledge of how the thing actually runs at scale — the edge cases, the failure modes, the six months of context VentureBeat keeps warning gets scattered across prompts and Slack threads. A clone reproduces the happy path. It doesn’t reproduce the institutional knowledge of keeping the real thing alive.

Notice the pattern: none of these are code. They’re the things vibe coding can’t shortcut.

What to do about it

Stop treating your codebase as your asset. It’s a means to an end. Write down, plainly, what would still be hard for a well-funded team to replicate even if they had your entire codebase tomorrow. If you can’t name three things, that’s the work.

Invest in the un-clonable layers. Proprietary data, distribution, switching costs, compliance moats, and brand take time to build and can’t be prompted into existence. That’s exactly why they’re worth building — and why they survive a diligence clone test.

Document your real defensibility before someone audits it. If your moat is a hard-won integration or a data advantage, make it legible. The companies that come out of a Bain-style audit looking strong are the ones that can clearly articulate where the value sits — not the ones hoping nobody looks closely at how copyable the front end is.

Use the same trick on yourself. You have these tools too. Try to vibecode a clone of your own core product. Whatever you can rebuild in a day was never your defensibility. What you can’t easily rebuild is the thing to protect and grow.

The bigger shift

For a long time, the worry about vibe coding was security and quality — and those are real. This is a different and quieter consequence: vibe coding is collapsing the value of software as software. When building is cheap, having built is no longer impressive. The premium moves to everything that was never about the code in the first place.

Bain figured out how to put a number on that. The smart move is to figure it out before they have to.