$20,000 a Monkey: The $4 Billion Company Nobody's Heard Of

Source: My First Million | Published: 2026-08-12T13:00:38Z

Charles River Labs supplies research primates to 80% of biotech firms and pulls in $4 billion a year — yet almost no one has heard of it.

An Industry You've Never Thought About, at a Scale That Defies Belief

More than 20% of drugs worldwide are tested on monkeys before they reach market. The U.S. imports roughly twenty thousand of them every year. These are mostly long-tailed macaques — chosen precisely because they're intelligent and biologically close to us. In the wild, they'll snatch your phone for a selfie, steal your hat, and refuse to return it until you offer food.

Then there's a company called Charles River Labs. Sounds like a venture firm. It's actually the world's largest contract research organization. It breeds and maintains mice, rats, dogs, and monkeys for biotech companies, running all their preclinical testing. Eighty percent of the biotech industry works with it. It generates $4 billion in annual revenue.

Because the supply chain was too volatile, Charles River Labs spent $500 million acquiring a monkey-breeding company — just to control its own supply.

This is an industry most people have never heard of, with a publicly traded company generating $4 billion a year whose market cap defies most people's imagination.

There's a Business Behind Everything

There's a line from the podcast: "When I look around, nothing just appears out of nowhere." The lead in that mechanical pencil — someone specializes in exactly that, knows every difference between 3mm and 6mm refills, and spends every year in conference rooms talking to clients about it. The conveyor belt at airport security — someone sells those, and became the wealthiest person in their community doing it.

American Express once ran a business called soybean oil verification — confirming for banks that the soybean oil a borrower claimed to have in a warehouse actually existed. It generated millions in annual revenue, until someone filled the tanks with seawater and blew the fraud wide open. Warren Buffett bought AmEx during the stock crash that followed, because he'd gone to a restaurant, asked a waitress, and decided ordinary people's trust in the AmEx card was unaffected.

These businesses tucked into the crevices of industries share one trait: few entrants, little competition, but far larger than anyone expects.

The Dental Clinic's "Debbie Problem"

In San Francisco, a Stanford-educated founder built a company called Daydream Dental. His entry point was specific: in the back office of every dental clinic sits someone called Debbie. Her job is to call insurance companies, read billing codes, fight for reimbursements, verify patient coverage.

The process is error-prone, inefficient, and the lifeline for the clinic's cash flow. His pitch to dentists: let us take over that function, using AI and specialized staff. We'll recover 15 to 20 percent of the money you're leaving on the table. By year two, he was approaching $10 million in revenue.

How did he see the opportunity? His mother is a dentist. He worked summers in her clinic.

Someone else built a business maintaining industrial generators for hospitals and nursing homes. Hospitals cannot lose power — not even for an hour. This business could grow to hundreds of millions or even a billion dollars. His path in was a chain of accidental consulting gigs and chance connections.

Paul Graham put it well: only by getting close to the frontier can you see the cracks. From a distance, the frontier looks like a smooth arc. Walk into it, and you start noticing where people are taking detours, where things still have to be done by hand, where someone is making do with a clumsy workaround.

Attention Is a Competitive Advantage

Jerry Seinfeld spends the first two hours of every morning writing jokes. He's done it for 40 years. He compiled those half-finished punchlines from yellow sticky notes into a book titled Is This Anything? — because most jokes are nothing, but he keeps asking: is there something here?

One joke: your call drops, the other person calls back, and the first thing they say is "sorry, not sure what happened." Seinfeld noticed this. Why do we always say "not sure what happened"? Do you actually think you know how a phone works? You can't even explain how a normal call goes through.

Eddie Murphy has said that part of what makes him a good comedian is extreme sensitivity to detail. He hands his car to a valet, gets it back, and if the smell inside is even slightly off, he notices it, and he can articulate it. Most people don't notice. Or they notice, and they don't stop to think about it.

The title of Mark Manson's book, The Subtle Art of Not Giving a F\ck*, came from a song by a band he liked — the only song of theirs he remembered. He'd written thousands of blog posts, none of which had a tenth of the impact of that title. He simply noticed the name, and held onto it.

Attention is a skill no one trains, and no one thinks is worth training — but it's the starting point for all creative work and most good businesses.

Working Backwards from Childhood to Find Your Real Obsession

There's a question worth sitting with: what did you spend your time on as a kid?

Dan Brown's father never put presents under the Christmas tree. Instead, he left a treasure map. Brown had to follow the clues to find his gifts. That experience lodged itself in his brain. What is The Da Vinci Code? A treasure hunt — clues, puzzles, secrets revealed one by one. He just told the story that had fascinated him since childhood better than anyone else.

Elan Lee, co-founder of Exploding Kittens, once worked at Microsoft, tasked with designing a console to compete with PlayStation — which became the original Xbox. His office now looks like a toy store: tabletop games he designed himself, elaborate LEGO builds threaded with LED lights. He has a dinosaur egg fossil worth potentially millions of dollars that anyone can touch, because museum display cases bore him. His eight-year-old self would have wanted to touch it. Would have wanted his friends to touch it too.

Every few years, he takes a group of friends on a trip specifically to test the best escape rooms in the world. This isn't an occasional hobby. This is how he vacations. Along the way, he made seven of the top-ten bestselling games on Target shelves.

He never told himself "that was childhood, time to get serious." He just kept doing it, until it became his work, and then the thing he was best at.

Why Smart People Hide Their Enthusiasm

Smart people tend not to show their enthusiasm easily, because enthusiasm looks naive — like a golden retriever, not cool enough.

But everyone likes being around people who are genuinely excited. Enthusiasm is an undercompeted arena — everyone knows it has value, but almost no smart person is willing to invest in it, because it doesn't seem sophisticated enough. That gap is exactly where the opportunity lives: be willing to do what others find strange, and you automatically enter a competition with seven participants and the same prize pool as any other.

Elan Lee, in front of dozens of people, got on his knees on the floor and designed games on blank cards with markers on the spot, watching people's reactions, looking for which card made someone actually react. He was using the crowd as a focus group. He did this looking like an eight-year-old — baggy sweatpants, socks, wearing rimless lenses perched on his nose.

He didn't care how it looked. He was just doing what he loved most.