Not every business is a good business to buy.

I know… that’s not what you hear on the internet. Online, every business is a money-printing machine just waiting for you to swoop in, slap on some “systems,” and start sipping cocktails on a beach somewhere.

Reality check: some of these things will chain you to a desk, bleed you dry, and have you Googling “how much does it cost to undo a bad acquisition” at 3 a.m.

Here’s the truth after almost two decades of buying companies — I’ve done nine personally, have minority stakes in over two dozen more, been inside over a hundred deals, and at Acquisition Lab we’ve helped members close almost half a billion in small business transactions.

Some deals look good on the surface, but underneath? You’re signing up for a nightmare.

 

 

But the good news is most of these risks are fixable if you structure the deal right.

Here are five types of businesses I would never buy — unless I could structure around the risk. And at the end, I’ll give you the sixth “never buy” that’s actually one of the biggest missed opportunities out there.

 

1. The Key Function Risk

This is when the owner is the business. They’re the top salesperson, the lead engineer, the face on the door… maybe literally the name on the door.

When they leave, the whole thing evaporates. No systems. No processes. No team who can do the work without them.

I had a guy come to me once wanting to sell his construction business. Netting a million a year in pre-tax income. Sounds awesome, right?

“Okay,” I asked, “how do you sell customers?”

“I do the selling.”

“How do you find them?”

“My network.”

“Who does the design work?”

“I do all the design work.”

“Who runs the projects?”

“That’s me.”

“Fine. Who’s running the equipment when you’re moving a pond?”

“Me.”

You get the picture. He was the sales department, engineering department, project manager, and heavy equipment operator. He had $4 million in equipment… and no sellable business. My advice? Liquidate the assets.

 

 

Here’s the thing — most key function risk isn’t that extreme. In sub-$5M deals, the owner is usually very involved. That’s fine, if you structure for it:

• Earn-out: Tie 10–20% of the purchase price to a 6–12 month earn-out based on customer or revenue transition.
• Brand transition plan: Move customers from relying on the owner to relying on the company brand. Put it in the purchase agreement.
• Employee retention bonuses: Keep key people on board through the transition.

And the big one: trust the seller. If you can’t trust them, walk away.

Bottom line: if you buy key function risk, you’re buying a job, not a business. That’s fine — just don’t let the internet gurus fool you into thinking it’s passive.

 

2. Low-Water Margins

Ever seen a company with huge revenue but margins so thin you need a microscope?

I saw a waste management 3PL with $37M in revenue… and $500K in net profit. One percent profit margin.

That’s not a margin. That’s a rounding error. One supply chain hiccup, one wage hike, one late customer payment and you’re underwater.

Here’s how I look at it:

• Gross margin by product/customer: Find the high-margin parts of the business and double down.
• Add value-added services: Warehousing, logistics, design — things that boost margins fast.
• Price it right: Sometimes high-volume, thin-margin models work… if the cash conversion cycle is lightning fast.

Margins don’t lie — but they can hide opportunity. You just have to dig.

 

3. The Customer Concentration Landmine

Small businesses love their big customers. Until that customer leaves.

 

 

I’ve seen concentration as high as 70%. At that level, if they walk, you’re done. And yes, you still have to make your loan payment.

I bought a distribution company where one client was 27% of revenue. Enough to keep you up at night… except they’d been with the company for 27 years, had deep relationships across the org chart, and switching would’ve been death by a thousand paper cuts.

If you take this risk:

• Assess the stickiness: Long history, high switching costs, multiple relationships.
• Expand revenue immediately: Use the big client as a case study to win others.
• Re-sign contracts before close if you can.
• Tie seller payout to retaining that customer.

You’re not buying revenue. You’re buying durability.

 

4. Recession-Vulnerable Models

Some businesses are like fair-weather friends — great in good times, gone when it rains.

Luxury goods, events, elective medical, residential construction. If you’re using debt to buy one of these and the economy dips, you’re toast.

 

Source: smartasset

 

The problem? The last real recession was a long time ago. COVID was weird. PPP money flowed. A lot of P&Ls look better than they really are.

Here’s my hedge:

• Stress test before you buy. How far can revenue fall before you’re in trouble?
• Build a war chest instead of giving yourself a CEO salary on Day 1.
• Pair cyclical with non-cyclical: Snowplow in winter, corporate landscaping in summer.

Buy something you can manage through a storm — not something you have to pray for.

 

5. The Owner-as-Banker Illusion

“Don’t worry about a bank,” the seller says. “I’ll finance it myself. Just pay me from cash flow.”

Sounds amazing, especially if you’re cash-strapped. But be careful.

Usually it means:

• They’re overvaluing the business.
• It’s unbankable — they’ve already tried and failed to sell through normal channels.

I’m not anti–seller financing. I like it. But it should be a feature, not the reason you do the deal.

 

Source: Motiva Law

 

Here’s how to protect yourself:

• Re-underwrite like you’re paying cash.
• Tie payments to performance so you’re not over a barrel if things dip.

Cash terms can’t fix a bad business.

 

6. The “Never Buy” That’s Actually a Goldmine: Legacy Tech Infrastructure

Paper records. Outdated CRMs. Manual scheduling. Zero automation.

Most buyers see this and run. I see dollar signs.

Seven years ago, I bought a business running on DOS. Yes, the green-screen, type-in-commands DOS. Most buyers wouldn’t touch it.

One Acquisition Lab member bought a company run by a husband-and-wife team putting in 60–80 hours a week. Everything in their heads. All handwritten. She spent 18 months pulling the knowledge out of their brains, documenting SOPs, adding low-cost software, hiring VAs…

She cut owner hours to 20, sold two years later in a buyer frenzy with 27 offers.

If you can price the “burden” of modernization into your offer, this is one of the easiest ways to create massive enterprise value.

Here’s the real takeaway:

Every deal has risk. I sign personal guarantees. I rarely bring in partners. I’ve bought almost every deal with 100% cash at close. Not because I’m reckless — but because I know I can depend on myself when things get messy.

You don’t have to be crazy like me. But you do need to know how to structure a deal so you’re not betting the farm on something you didn’t see coming.

The perfect deal doesn’t exist. The right deal is one where you see the risks, have the tools to structure around them, and trust yourself to figure it out when (not if) something goes sideways.

Ready to acquire a business in the next 12 months? The Acquisition Lab is your first stop. Reach out to us today and get on the fast track to becoming an acquisition entrepreneur.