60% of Bettors Generate 1% of the Profit. You Know What That Means.
Here's a number that should stop you.
A study of nine million bettors across the 2023–24 NFL season found that 60% of them accounted for just 1% of sportsbook revenue.
In New Jersey, one of the most-studied markets in the country, roughly 5% of gamblers place about 70% of the bets.
Sit with the shape of that for a second.
A business where the majority of your customers generate almost none of your revenue is not a business with a lot of happy casual customers. It's a business with a very small number of customers being taken apart, and a large crowd providing cover.
I spend my working life reading financial structures. And when you see a revenue distribution that lopsided, you already know what the product is before anyone tells you.
What a lopsided revenue base tells you
Every business optimizes for the customers who pay it.
That's not cynicism, it's just how companies work. If 5% of your users produce 70% of your revenue, then your notifications, your promotions, your product roadmap, your retention team, and your app design all get built around that 5%. Not deliberately, not maliciously — mathematically. Whatever keeps them engaged is what gets more of.
Now consider what defines that 5%.
They're not the sharpest bettors. They're not the ones with an edge. In a business with a built-in house margin, the customers producing the most revenue are, by definition, the ones losing the most money. The revenue is their losses. There's no other source.
So the product is being tuned, continuously, around the behavior of the people it's hurting most.
That's not a conspiracy theory. That's just reading the income statement backwards. Any finance person would tell you the same thing about any business with that distribution.
And it explains the design choices. Roughly 90% of bets are now placed on phones. More than half are live bets, placed during play. Open an app and you'll find hundreds of markets per game — not just the winner, but the next pitch, the next possession, whether a specific player hits a specific number. None of that exists to serve the guy putting twenty dollars on his team once a week. All of it exists to keep somebody in the loop for three hours.
Where I'm standing
I'm a finance director at a dealership. I sell financial products for a living, I'm regulated, and I'm not remotely anti-gambling. I've made bets. I've enjoyed them.
I'm also the guy who pulls your credit report.
Which is why this topic got my attention — and it's the part I want to spend the rest of this post on, because it's the piece almost nobody connects.
What I see from my side of the desk
The most rigorous research on this comes from a UCLA-led team who studied credit records for more than four million consumers across the period spanning 2016 to 2023.
They found that after states legalized online sports betting, there was a substantial increase in bankruptcy rates, debt sent to collections, use of debt consolidation loans, and — this is the line that stopped me — auto loan delinquencies.
I have looked at thousands of credit reports. Auto delinquencies show up on them constantly. And I never once thought about where they came from beyond the obvious: job loss, medical bills, divorce, someone who bought too much car.
It never occurred to me that some meaningful share of them started with a phone app.
The effects showed up roughly two years after legalization. In states with online access specifically, researchers found around a 10% increase in the likelihood of bankruptcy and an 8% increase in debt collection amounts.
A note on that figure, because I'd rather you hear it from me: earlier working papers put the bankruptcy increase considerably higher, in the 25–30% range. The more recent and more carefully controlled estimate is the smaller one. I'm using the conservative number. The scarier version is available if I wanted to scare you, and I'd rather you be able to trust the ones I do use.
What it does to the money that was supposed to be yours
Two more studies, and these are the ones that reframed it for me.
A Northwestern-led team examined 230,000 households. About 8% used sports betting apps. Those who did lost an average of $1,100 a year — and showed higher credit card balances, reduced access to credit, and a shift out of longer-term investments. The effects were sharpest among financially constrained households. The researchers also found bettors were more likely to have received pandemic-era child tax credits, which is a technical way of saying: more likely to have kids.
Then a BYU study just published in the Journal of Financial Economics, using transaction data from 184,000 households, found that after legalization households cut net investment in brokerage accounts by 20%. Among the heaviest bettors, investment deposits fell by more than half. Their summary line is the one I'd put on a wall:
For every dollar going into a betting app, roughly 20 cents never made it into long-term savings.
That's the part that makes this a Wealth problem rather than an entertainment problem. It isn't a swap of one leisure expense for another. It's money leaving the part of the budget that compounds.
The researchers even ran a clever control: they checked whether the Taylor Swift Eras Tour ticket release produced a similar drop in investing. It didn't. Something specific to betting is driving it, not just a new thing to spend on.
And the clinical side
A study published this year analyzed health records covering more than 197 million U.S. adults from 2018 to 2026. In states that legalized sports betting, clinical diagnoses of gambling disorder rose more than 60%, from 3.0 to 4.8 per 100,000.
The fastest-growing group is men aged 18 to 29, now at 7.7 diagnoses per 100,000. Women the same age: 1.0.
Men are roughly 3.4 times more likely than women to gamble at a problem level, and the addiction rate associated with sports betting specifically runs about double that of other gambling formats.
Now the honest part
If I stopped here I'd be doing the thing I criticize, so:
Most people who bet will be fine. That 60%-of-bettors-produce-1%-of-revenue statistic cuts both ways. It means most bettors are losing almost nothing. For the large majority, this is genuinely what it looks like — twenty bucks, a more interesting Sunday, no consequences.
Legalization also moved activity out of illegal markets, where there were no protections, no limits, and no helpline number on the screen. That's a real benefit and it's usually left out.
And correlation isn't destiny. These studies compare states before and after legalization. They're well-designed, and the same pattern shows up across multiple independent datasets, which is why I trust them. But no study can tell you what your household will do.
So this isn't "gambling is evil." It's narrower and more useful than that: there is a small group getting destroyed, the business depends on them, and the entry point looks identical for everybody.
The only question worth your time is which group you're in.
How to actually check
I'm not going to hand you a fake diagnostic. Validated screening tools exist and take about two minutes — the National Council on Problem Gambling has them at ncpgambling.org, and they're better than anything I could write.
But here are three honest questions to ask before you get there. Not a diagnosis. Just a mirror.
1. Do you bet differently when you're down? If a loss changes the size or frequency of the next bet, that's the single most important signal in the whole picture. Chasing is the mechanism. Everything else is detail.
2. Where is the money actually coming from? Not "can I afford it" — that question always answers yes. Instead: if you stopped today, what would that money go to? If the honest answer is savings, the kids' account, or a debt you're carrying, you already have your answer. That's the 20-cents-on-the-dollar finding showing up in your own house.
3. What does a loss do to your evening? For the 60%, nothing. It's a shrug. If a bad beat changes how you are with your wife or your kids for the rest of the night, the money stopped being the point a while ago.
If any of those landed, run the actual screen. Two minutes.
One thing about your sons
I'll write about this properly in a separate post, but it belongs here as a warning.
A Common Sense Media survey of just over a thousand boys aged 11 to 17, published in January 2026, found that 36% reported gambling in the past year.
I coach kids. I have sons in that range. That number is not abstract to me, and if you have boys, it isn't abstract to you either.
One step
Open your banking app and add up what went to betting platforms in the last ninety days. Not what you think — the actual total, including the deposits you forgot about.
Then look at what went into savings over the same period.
You now have the only two numbers that matter, and you have them in about four minutes.
If that total is worse than you expected and you're not sure you can stop: call or text 1-800-GAMBLER. It's free, confidential, and available 24 hours a day. The National Council on Problem Gambling also has resources and screening tools at ncpgambling.org. And if things have gotten dark — if the losses have you somewhere you don't want to be — call or text 988. That's not a smaller step than anything on this page. It's the first one.
There's no shame in any of this. The product was engineered by people who are extremely good at their jobs, aimed at a part of the brain nobody chooses, and delivered to your pocket where it never closes. Getting caught by it isn't a character flaw.
But somebody's paying for those stadium ads, and it isn't the 60%.
Money is one of five pillars — alongside Life, Love, Work, and Health — and it's rarely the one that breaks first. If you want to see which one is actually under load, the TASR Score takes five minutes and doesn't ask for your email. If you'd rather skip the diagnosis and move, there are 100 concrete actions here.
Frequently Asked Questions
What percentage of sportsbook revenue comes from problem gamblers? Revenue is extremely concentrated. A study of nine million bettors during the 2023–24 NFL season found that 60% of bettors accounted for just 1% of sportsbook revenue, and in New Jersey roughly 5% of gamblers place about 70% of bets. Because sportsbooks earn from customer losses, the highest-revenue customers are by definition those losing the most money.
Does sports betting hurt your credit score? Research using credit records from more than four million consumers found that after states legalized online sports betting, there were substantial increases in bankruptcies, debt sent to collections, use of debt consolidation loans, and auto loan delinquencies. The effects generally appeared about two years after legalization and were concentrated among financially constrained households. Studies have also found lower average credit scores in states with legal online betting.
How much money do sports bettors lose on average? A study of 230,000 households found that about 8% used sports betting apps, and those who did lost an average of roughly $1,100 per year. Losses were substantially higher among frequent bettors, and financially constrained households showed the largest negative effects.
Does sports betting affect savings and investing? A study of 184,000 households published in the Journal of Financial Economics found households cut net investment in brokerage accounts by 20% following legalization, with the heaviest bettors cutting investment deposits by more than half. The researchers estimated that for every dollar deposited into a betting app, roughly 20 cents never reached long-term savings.
How do I know if I have a gambling problem? Validated screening tools are available free from the National Council on Problem Gambling at ncpgambling.org and take about two minutes. Common warning signs include increasing bets after losses, using money designated for other purposes, concealing the amount wagered, and losses affecting mood and behavior for extended periods. For confidential help, the National Problem Gambling Helpline is 1-800-GAMBLER, available 24 hours a day.
