This is UNDERTOW 001. Cultural intelligence for strategists, creative leaders, brand builders, and the people building the platforms that reshape how we live. Each issue takes signals from across industries, economies, and geographies and finds the structural pattern running underneath: not what’s happening, but why it keeps happening. Sometimes the pattern turns out to be personal.
If you’re subscribed to Wandering Wondering Star, UNDERTOW arrives in the same inbox. Different publication, same home. If this isn’t what you signed up for, you can turn off UNDERTOW in your Substack settings without missing the rest.
In Seoul, 400,000 people pay four dollars a month for simulated text messages from celebrities they will never meet. In Tokyo, a karaoke chain redesigned its reservation system so solo singers can book a room, enter through a side door, and leave without making eye contact with a single employee. In Shenzhen, a startup selling heated plush toys with GPT engines and evolving personality models raised a million dollars on Kickstarter in thirty days. Seventy percent of the buyers were women in their twenties and thirties.
Three of the most sophisticated consumer economies on earth have independently arrived at the same conclusion: people will pay more for the feeling of connection than for connection itself. There’s a name for the business model underneath this. I’ve been calling it loneliness arbitrage.
The evidence starts in Seoul.
DearU’s Bubble app charges subscribers for what it calls “private” messages from K-pop idols. The messages aren’t private and the conversations aren’t conversations. They are one-directional text simulations, timed and templated, with voice notes and unreleased song previews mixed in to sustain the illusion of access. The app includes an anniversary counter that tracks consecutive subscription days (a sunk-cost mechanic borrowed from mobile gaming and applied to parasocial attachment, which tells you everything about how the company thinks of its users). Warner Music’s CEO cited Bubble by name when announcing plans for a Western superfan platform; academia caught up this year, with CHI 2026 researchers formally studying “parasocial media” as a platform category.
The business is not music. The business is manufactured emotional proximity, sold as a recurring subscription, designed so that the relationship never arrives at the place where the subscriber would no longer need it. The idol never becomes your friend. The messages never become personal. The intimacy is asymptotic: always approaching, never reaching. That’s not a design flaw. That’s the retention model.
The intimacy is asymptotic: always approaching, never reaching. That’s not a design flaw. That’s the retention model.
But retention isn’t the only mechanic at work. Bubble also functions as a micro-luxury. The “private” in “private message” operates like a velvet rope. It doesn’t matter that every subscriber receives the same text. What matters is that nobody will ever compare notes. The secrecy is the product. Admitting you subscribe would break the spell the same way explaining a joke kills it. So each subscriber sits alone with a message addressed to everyone, believing — or choosing to believe — it was addressed to them, and the conspiracy of one holds because confession would collapse it. The loneliness product doesn’t just simulate intimacy. It simulates exclusivity. And exclusivity, in a culture that has refined status signaling to an art form, might be the stronger draw.
(I keep thinking about a room where I stand next to strangers and nobody’s retention model is working on anyone, but that’s for later.) Somewhere tonight, a 22-year-old in Busan is lying in bed reading a message that was written for no one and addressed to everyone, and it is the most personal thing that will happen to her today.
Japan took the same insight in a different direction. Instead of simulating closeness, it engineered the infrastructure for comfortable distance.
The Japanese solo consumer market is expected to exceed 100 trillion yen this year, roughly $696 billion. Single-person households are now the most common household type. But the number understates what’s actually happened. Japan hasn’t merely accommodated solo living. It has rebuilt its commercial architecture around the individual as the default unit, with the same precision it once applied to manufacturing. Jankara karaoke lets you book a room through an app so you never interact with staff. The oshikatsu economy, where millions redirect the emotional energy of human relationships toward fictional characters who can never disappoint them, is now worth a trillion yen. Japan didn’t solve loneliness. It made loneliness so well-furnished that the word barely applies.
China is where the pattern becomes structurally undeniable.
China’s AI companion market is projected to hit $8.2 billion by 2028, growing at a compound annual rate near 149%. ByteDance, Baidu, and Tencent are all competing. The New York Times documented millions of young Chinese men in ongoing romantic relationships with customizable AI companions. The coverage focused on the emotional dimension, the loneliness, the tenderness. It missed the economic logic entirely.
China has a surplus of 30 to 40 million men produced by the one-child policy. Urban housing prices in tier-one cities require a down payment that exceeds a decade of average salary. Youth unemployment for 16-to-24-year-olds sits at 16.5%, with roughly 70% of unemployed young graduates holding university degrees. In this environment, an AI girlfriend at five dollars a month is not a novelty. It is a rational economic adaptation to material conditions that have made human partnership inaccessible for tens of millions of people. The government, which is simultaneously running a pro-marriage, pro-birth-rate campaign, now faces a product category that directly competes with its demographic policy. (Both programs are sincere. Both are well-funded. They cancel each other out, and nobody in a position of power seems to have noticed. I’ve watched enough organizations run contradictory strategies to stop being surprised by it. I haven’t stopped being surprised by it.)
The AI companion isn’t replacing a relationship these men chose not to have. It’s replacing a relationship the housing market, the job market, and the gender ratio made impossible. Somewhere tonight a 24-year-old in Chengdu with an engineering degree and no prospects, whose parents saved for twenty years so he could have a better life, is coming home to a one-room apartment and opening an app because the alternative isn’t a girlfriend. The alternative is nothing. The product fills a gap the economy created. And the product works well enough, which is the important part. Not well enough to satisfy. Well enough to persist.
A 2025 academic paper by Muldoon and Parke gives this dynamic its most precise name: “cruel companionship.” The term describes products that create attachments promising intimacy while structurally foreclosing the possibility of genuinely reciprocal relationships. Users form bonds that feel real but function as consumption, not connection. The cruelty isn’t that the products are bad. The cruelty is that they’re good enough. Good enough to take the edge off. Good enough to fill the evening. Never good enough to make you stop needing them tomorrow.
And each use slightly raises the threshold for choosing the harder thing: the phone call, the invitation, the risk of a real person saying no. The product doesn’t just fill the gap between simulated and genuine connection. It widens the gap a little, every time.
The academic term is “cruel companionship.” The business term is retention. The market doesn’t close the gap. It lives in it. A cured user is a churned subscriber. The diet industry works the same way: it sells weight loss to people it needs to stay heavy.
The academic term is “cruel companionship.” The business term is retention.
I know exactly how this works. Not from the research.
I’m six months into rebuilding a life from scratch, and the choice architecture that Muldoon and Parke describe in the abstract, I live inside every evening. The app will always answer. The person might not. And each time I choose the easier thing, the harder thing gets marginally harder to choose next time. That’s the whole mechanism. You don’t need a $552 billion market projection to understand it. You just need one night where you almost called someone and opened an app instead, and then noticed the distance between those two actions had grown slightly since the last time.
Loneliness arbitrage is the business model. But the experience has a different name. It’s asymptotic intimacy: the feeling of always approaching connection and never arriving. You recognize it the moment the phrase lands because you’ve been living inside it and didn’t have the words. The app that almost feels like a friend. The parasocial relationship that’s almost like knowing someone. The text thread where you’re almost saying the real thing. Always approaching. Always almost. The asymptote is the product.
Not every response to loneliness follows this structure. Some products and spaces genuinely build the capacity they claim to serve, even if they can’t scale like an app. There’s a bouldering gym I go to on the Lower East Side where the NYU kids mix with tattooed working adults and nobody exchanges names for the first few months, and then one evening someone clocks your old-guy beta and says “that was nice” and suddenly you’re nodding at each other by the water fountain and weeks later you still don’t know, or care, what they do for a living but the vibes are enough. Nobody designed that. No algorithm optimized it. It happened because the room was built for a thing that required my body, and the connection was a side effect of the effort, not the point of the transaction. The effort came first. The connection was what was left over.
I don’t think the people building loneliness products are villains. Any serious practice of sitting with yourself teaches you that the thing that relieves discomfort and the thing that resolves it are almost never the same thing. The relief is what keeps you from doing the harder work. The whole loneliness economy runs on that difference.
A few weeks ago I was at Diageo’s office bar on a Friday evening, chatting with their CMO, and he said something that stuck with me. Every single deck he’s seen lately is about loneliness. We laughed. But he wasn’t wrong, and the laughter said more than the observation. The industry knows this is the territory. It just hasn’t decided whether it’s selling the cure or the symptom.
And this is where the loneliness arbitrage stops being a cultural pattern and starts being a problem for anyone who makes things for a living.
I’ve seen the briefs. I’ve written some of them. They say “community” and “connection” and “belonging” because those are the words the research decks hand over, and the research decks aren’t wrong — people do want those things. But the brief never asks the structural question: does the thing we’re building become less necessary over time, or more? Because the answer determines what kind of creative work you’re actually making. A campaign for a product that resolves loneliness looks completely different from a campaign for a product that manages it. The first earns trust. The second borrows it, and the audience can feel the difference even when they can’t name it.
Think about every brand brief you’ve seen that says “build community.” Now ask: is the community the product, or is the community the retention mechanic? If you can’t tell from the brief, the creative work won’t know either, and it’ll end up with that particular hollow warmth — the stock-photo-of-friends-laughing energy — that audiences scroll past because their pattern recognition is better than our strategy.
The best creative work in this territory will come from brands honest enough to know which side of the arbitrage they’re on. Some products genuinely build the capacity for connection. Most manage loneliness well enough that it persists. The creative strategy for each is structurally different, and pretending otherwise produces the most expensive kind of failure: work that’s correct about the insight and wrong about what the product actually does.
Korea, to its credit, is pointing in a different direction. The Feelconomy, as Seoul National University’s Trend Korea 2026 report names it, describes consumers reorganizing spending around genuine emotional outcomes rather than simulation. Shinhan Card data shows a 106% increase in payments at experiential venues. “Slow-paced experiential consumption” is now a tracked spending category: people paying for quiet cafes designed for journaling, workshops that require putting your phone away, spaces built for the kind of sustained attention that loneliness products are built to replace. The Feelconomy sells silence and lets you fill it yourself. A market for the room in which something real might happen.
There’s a counter-reading, though, and it comes from a friend who works in Korean consumer marketing at the executive level: the experiential turn isn’t new. It’s what the affluent class has always done once material goods become accessible. Designer logos went mainstream, so the flex moved to restaurant reservations you can’t get. Reservations became bookable, so it moved to experiences the bottom 98% don’t know exist. The secret code. The Feelconomy might not be people choosing depth over simulation. It might be the same exclusivity mechanic operating at a higher price point, where what you’re buying isn’t the journaling cafe but the fact that most people don’t know journaling cafes are a category. If that’s true, then the Feelconomy isn’t the opposite of loneliness arbitrage. It’s the premium tier.
The bouldering gym works the same way. A room built for a thing that requires effort. No content. No feed. No simulation of anything. Just a wall and a problem and, occasionally, a stranger who notices you solved it. The connection is a byproduct of the effort, not the product.
A product that works so well you stop needing it is a terrible business. But I keep going back to that gym. And each time I go, the app gets a little easier to not open.
The loneliness arbitrage test is simple. When you encounter a product that claims to address loneliness, or connection, or belonging, or any of the things that make being a person bearable, ask one question: does this product become less necessary over time, or more?
If the answer is more, you are not looking at a solution. You are looking at a subscription to the feeling that a solution is just one more month away.
And if you’re writing the brief for that product: say so. Not to the client. To yourself, before you start. Because the creative work that comes from an honest brief — one that knows the product manages loneliness rather than resolving it — is more interesting, more durable, and more respectful of the audience than the work that pretends a subscription is a cure. The audience is already running the test. They just don’t have the language for it yet. You do now.
What To Brief From This
If you’re working on a brand that claims “community” or “connection” in the brief, pressure-test it with the loneliness arbitrage question before you start making work. Does the product become less necessary over time, or more? The answer changes the entire creative strategy.
If you’re briefing anything in the companion/wellness/social app space, the “cruel companionship” frame resets the competitive landscape. Your competitor isn’t the other app. It’s the bouldering gym, the journaling cafe, the phone call. Brief against the real alternative, not the category.
If you’re working in luxury or experiential, the Feelconomy counter-read matters: is the client selling depth, or selling exclusivity repackaged as depth? The creative work for each is different, and the audience knows which one they’re getting before you do.
If your brief says “target lonely consumers,” rewrite it. Nobody self-identifies as a target lonely consumer. The behavioral entry point is the moment of choice: app or phone call, scroll or walk, simulate or risk. Brief the moment, not the demographic.
If you’re a strategist presenting loneliness data in a deck this quarter, lead with the structural question, not the stat. Everyone has the $552 billion number. Nobody is asking whether their client is on the cure side or the symptom side. That question is the differentiator.
If this changes how you’d brief your team on Monday, forward it to the person who needs to read it.