Complex Systems with Patrick McKenzie (patio11)

In this episode of Complex Systems, Patrick McKenzie (patio11) is joined by Justin Kuiper, a longtime writer for MatPat's Game Theory family of channels and now creator of Proof Positive, to discuss the microeconomics of YouTube. They break down how creators actually get paid — from $3–$20 CPMs and the leaky funnel where a million views yields perhaps 50,000 actual ad views, to sponsor reads, Super Chats, and MrBeast selling chocolate bars as his own advertiser of last resort. Along the way, they explore how a successful channel becomes a firm that absorbs specialist labor from less successful peers, why the algorithm gives every upload a trial by attention, and what parasocial spending has in common with Mark Twain's speaking circuit.
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Full transcript available here: https://www.complexsystemspodcast.com/justin-kuiper-youtube/
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Presenting Sponsors: Mercury, Chainguard & MongoDB 

Complex Systems is presented by Mercury—radically better banking for founders. Mercury's new feature Command brings an LLM directly into your banking interface, so checking balances, finding invoices, or sending a wire is as easy as asking. Apply online in minutes at https://mercury.com/. 

If attackers are using AI to weaponize code faster than any team can review it, your scanners won't save you. Chainguard builds libraries and container images from source, verified all the way down, with near-zero CVEs and zero malware. Build safely at https://www.chainguard.dev/. 

What's the point of building faster with AI if your database can't keep up? MongoDB's native data model mirrors the language LLMs already speak. Ship at the speed of AI while staying ACID compliant at Fortune 500 scale. Start building at https://mongodb.com/ai.

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Links:
Proof Positive on YouTube: https://www.youtube.com/channel/UCns_C7cPAguFSv2YdltaOsg 
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Timestamps:
(00:00) Preview
(00:45) How creators make money on YouTube
(04:06) CPMs and the international ad market
(06:36) From solo creator to firm: working for MatPat
(09:28) Sponsors: Mercury | Chainguard
(12:30) From solo creator to firm: working for MatPat (cont’d)
(13:49) YouTube as a farm league for other industries
(17:15) Why now is the best time to start: discovery and universal basic attention
(20:47) Power users and how recommendations work
(24:23) Brand safety, rabbit holes, and the money laundering short
(27:38) Fads, timing, and the day-two piece
(35:52) The production function: scripts, shot lists, and editing labor
(42:14) The aesthetics of authenticity
(46:58) Sponsor: MongoDB
(47:47) Why more people should make videos
(53:52) Content marketing, sponsor reads, and remnant inventory
(01:00:24) Chocolate bars, paint sets, and creator products
(01:05:00) Parasocial relationships and the market in status
(01:16:43) Where to find Justin: Proof Positive
(01:18:58) Wrap

Patrick McKenzie (patio11) reads his 2023 essay "Deposit Franchises as Natural Hedges," written seven weeks into that year's banking crisis, making the case that deposit franchises are a natural hedge against interest rate risk (one regional banks were quietly encouraged to sell off by loading up on agency MBS). He walks through why "sweat and smiles" deposits were assumed to be sticky enough to fund long-duration assets, why that assumption broke down for retail and sophisticated depositors alike once rates rose, and how the resulting losses moved through bank balance sheets. Patrick closes with two years of hindsight: what the essay got right and wrong about how bad it would get.
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Full transcript available here: https://www.complexsystemspodcast.com/deposit-franchises/
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Presenting Sponsors: Mercury, MongoDB & Chainguard

Complex Systems is presented by Mercury—radically better banking for founders. Mercury's new feature Command brings an LLM directly into your banking interface, so checking balances, finding invoices, or sending a wire is as easy as asking. Apply online in minutes at https://mercury.com/. 

What's the point of building faster with AI if your database can't keep up? MongoDB's native data model mirrors the language LLMs already speak. Ship at the speed of AI while staying ACID compliant at Fortune 500 scale. Start building at https://mongodb.com/ai.

If attackers are using AI to weaponize code faster than any team can review it, your scanners won't save you. Chainguard builds libraries and container images from source, verified all the way down, with near-zero CVEs and zero malware. Build safely at https://www.chainguard.dev/. 
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Links:
Deposit franchises as natural hedges: https://www.bitsaboutmoney.com/archive/deposit-franchises-as-natural-hedges/ 

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Timestamps:
(00:00) Intro
(03:48) Natural hedges
(07:38) Deposit franchises as an asset
(10:53) The value of a deposit franchise increases with interest rates
(11:30) A brief aside about deposit beta
(14:58) Sponsors: Mercury | MongoDB
(17:30) A brief aside about deposit beta
(18:05) The deposit franchise as a hedge
(21:52) Regional banks were instructed to load up on agency MBS
(25:09) Why did the hedge bust?
(29:42) Sponsor: Chainguard
(31:03) Further bad news: the problem is bigger than MBS
(34:01) It is no longer February
(34:51) “Why didn’t the hedger hedge?!”
(35:37) So what do we do now?
(37:59) Postscript
(39:45) Wrap

Patrick McKenzie (patio11) reads his 2021 essay "Payments in Japan," tracing how Japanese consumers navigate a landscape with dozens of competing payment methods at once: credit cards, electronic money, QR-code super apps, convenience-store cash vouchers, and bank transfers. Along the way he covers the JFTC's campaign to force credit card networks to disclose interchange rates, how Rakuten and 7-Eleven each bought a bank to solve a payments problem blocking their core business, why PayPay's subsidized 2018 launch let it run away with the QR code market, and why konbini payments remain popular despite a user experience frozen in the late 1990s.
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Full transcript available here: https://www.complexsystemspodcast.com/japanpayments/
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Presenting Sponsors: Mercury & MongoDB
Complex Systems is presented by Mercury—radically better banking for founders. Mercury's new feature Command brings an LLM directly into your banking interface, so checking balances, finding invoices, or sending a wire is as easy as asking. Apply online in minutes at https://mercury.com/. 

What's the point of building faster with AI if your database can't keep up? MongoDB's native data model mirrors the language LLMs already speak. Ship at the speed of AI while staying ACID compliant at Fortune 500 scale. Start building at https://mongodb.com/ai.

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Links:
Payments in Japan: https://www.bitsaboutmoney.com/archive/payments-in-japan/ 
An Introduction to Japanese Society: https://www.amazon.co.jp/Introduction-Japanese-Society-Yoshio-Sugimoto/dp/1107626676/ 
 Use transit cards on your iPhone or Apple Watch in Japan: https://support.apple.com/en-us/120474 

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Timestamps:
(00:00) Intro
(02:44) Credit cards
(10:40) Payment method heterogeneity
(12:57) Cash
(14:57) Sponsors: Mercury + MongoDB
(17:29) Cash (cont’d)
(19:58) Electronic money systems
(22:13) App-based payments
(28:27) Convenience store payments
(31:27) Bank transfers
(34:03) Ambitions thwarted
(34:30) Wrap

Patrick McKenzie reads from his 2022 Bits About Money essay on mortgages, making the case that a mortgage is best understood as a manufactured product, not a simple loan between a bank and a customer. He walks through the assembly line behind every home loan, the loan officer and back-office staff who build the 700-page document. Then he traces the supply chain it gets sold into, where GSEs insure against non-payment risk, servicers buy the right to collect monthly checks, and pension funds and other private capital end up holding the economic exposure, because they want it more than banks do.
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Full transcript available here: https://www.complexsystemspodcast.com/mortgages/
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Presenting Sponsors: Mercury & Granola 
Complex Systems is presented by Mercury—radically better banking for founders. Mercury offers the best wire experience anywhere: fast, reliable, and free for domestic U.S. wires, so you can stay focused on growing your business. Apply online in minutes at mercury.com.

If meetings consistently leave you with hazy action items and lost context, Granola handles the transcription so you can actually participate and gives you searchable notes afterward. Try it free at granola.ai/complexsystems with code COMPLEXSYSTEMS

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Links:
Mortgages are a manufactured product: https://www.bitsaboutmoney.com/archive/mortgages-are-a-manufactured-product/ 
The 30-Year Mortgage is an Intrinsically Toxic Product: https://byrnehobart.medium.com/the-30-year-mortgage-is-an-intrinsically-toxic-product-200c901746a 
Michael Lewis’ The Big Short: https://www.amazon.com/Big-Short-Inside-Doomsday-Machine/dp/0393338827 
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Timestamps:
(00:00) Intro
(02:26) Mortgages are a manufactured product
(04:19) Who manufactures mortgages?
(07:08) Who buys mortgages?
(07:42) The risk of non-payment
(10:08) Sponsor: Mercury | Granola
(14:35) The risk of failing to service a mortgage correctly
(17:51) Every other risk you could imagine, of which there are many
(24:04) Scratching the tip of the iceberg
(25:10) More about flow meters
(26:24) Wrap

Patrick McKenzie reads from his 2024 Bits About Money essay on ACATS, the Automated Customer Account Transfer Service that governs how Americans move investment accounts between brokerages, then updates it with regulatory developments (and industry infighting) from early 2026. The essay covers why a system underpinning trillions of dollars in assets was deliberately designed to skip verifying whether transfers are actually authorized, what the three-business-day shot clock means in practice, and how a bad actor armed with a stolen identity and a mobile app can drain someone's retirement account before they notice it's gone. (Good news, though: they’ll almost certainly get it back. Bad news: quite stressful, and it often isn’t obvious when staring at the zero that this is a recoverable condition.)

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Full transcript available here: https://www.complexsystemspodcast.com/acats/
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Presenting Sponsors: Mercury & Granola 
If you have more interesting hobbies than managing your money, Mercury Personal is built for you. It allows you to automate movement between accounts—allocating paychecks and tax prep the moment they hit—with a sensible permissions model for partners or accountants. It works the way tech people expect banking to work. Go to mercury.com/personal to experience banking built by the same folks Patrick trusts for his business.

If meetings consistently leave you with hazy action items and lost context, Granola handles the transcription so you can actually participate and gives you searchable notes afterward. Try it free at granola.ai/complexsystems with code COMPLEXSYSTEMS

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Links:
Guys what is wrong with ACATS: https://www.bitsaboutmoney.com/archive/how-acats-transfers-work/ 

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Timestamps:
(00:00) Intro
(01:49) A brief digression into self-regulatory organizations
(03:04) FINRA regulates asset transfers between brokerages
(04:54) How does one transfer securities account assets?
(06:52) What does an ACATS request actually entail?
(09:44) Brokerages frequently do not verify incoming ACATS requests
(15:28) Recent developments in ACATS fraud
(19:13) Should I be terrified, Patrick?
(20:07) Sponsors: Mercury | Granola
(23:17) Should I be terrified, Patrick? (cont’d)
(24:46) Another fun wonky control
(28:29) A final ACATS story
(29:58) Regulatory updates: FINRA 26-02
(32:34) Comment letters from the industry
(43:20) Outro