// description
A platform business model creates value by facilitating interactions between two or more distinct user groups — buyers and sellers, creators and consumers, developers and users. Unlike traditional "pipeline" businesses that create a product and sell it, platforms don't produce the core value themselves. They enable others to create and exchange it, taking a cut of the transaction or charging for access. The platform's job is to attract and retain both sides of the market simultaneously — which creates the chicken-and-egg problem that makes platforms hard to build but extraordinarily valuable once established.
// history
Platform economics emerged as a field of study in the early 2000s with work by Jean Tirole and Jean-Charles Rochet on two-sided markets (Tirole won the Nobel Prize in Economics in 2014, partly for this work). Sangeet Paul Choudary, Marshall Van Alstyne, and Geoffrey Parker popularised the concept for business audiences in "Platform Revolution" (2016). The most valuable companies in the world — Amazon, Apple, Google, Meta, Airbnb, Uber — are all platforms. The insight that you can build a business by enabling others' value creation rather than producing it directly represents a fundamental shift in business model design that defines the digital economy.
// example
KDP is a platform: Amazon enables sellers to reach buyers and takes a royalty cut. Etsy is a platform: it facilitates craft sellers and buyers and charges listing fees plus transaction percentages. Gumroad is a platform. Smorg helps creators operate on these platforms — it's a tool for platform participants, not a platform itself. Understanding that you're operating on someone else's platform means your business success is partly dependent on their rules, algorithms, and policy decisions. Platform risk is real: Etsy changed its fee structure in 2022 and many sellers saw margins collapse overnight. Platform diversification is not optional — it's structural risk management.
// katharyne's take
Every KDP and Etsy creator is a platform participant, not a platform owner. That's important to understand: the platform can change its rules, cut your royalties, de-rank your listings, or ban you tomorrow. This is platform risk and it's very real — I've lived through multiple algorithm changes and policy shifts. The answer is never to panic and never to put all your eggs in one platform basket. Diversify platforms. Build an email list (which you own). Consider building your own small platform over time. Know whose house you're in.
// creative uses
- Use platform business model thinking to evaluate any new marketplace before investing time in it: ask whether the platform has solved its chicken-and-egg problem (is buyer traffic already there?), what its fee structure does to your margins, and what the platform's incentives are relative to yours as a seller.
- Build a micro-platform inside your own business by becoming the hub that connects your buyers to other resources — curated tools lists, supplier directories, peer communities. Even a small amount of platform logic (you connecting people to each other) gives you stickiness that pure content publishing doesn't.
- If you teach other creators, frame platform risk explicitly in your course content — helping students understand they're platform participants, not platform owners, is one of the most practically valuable things you can teach and differentiates you from creators who only teach tactics.
// quick actions
- Map your current revenue by platform today: what percentage comes from KDP, Etsy, Gumroad, your own site, courses? If any single platform accounts for more than 60% of revenue, you have a concentration risk problem — name it explicitly and make a plan to reduce it over 12 months.
- Read the terms of service update emails from your top platform this week — not to panic, but to know what changed. Platform participants who track policy changes have weeks or months of lead time that reactive sellers don't.
- Set up one additional revenue channel on a different platform this month — even one new Etsy listing if you're primarily a KDP seller, or one Gumroad product if you're primarily an Etsy seller. The goal is to begin building the muscle before you need it.
// prompt ideas
Audit my platform risk as a creator. My current revenue breakdown is: [X]% KDP, [Y]% Etsy, [Z]% [other platforms/own site]. Using platform business model thinking, identify my biggest concentration risks, explain what a policy change on my top platform could realistically do to my income, and give me a 12-month diversification roadmap that doesn't require abandoning what's already working.
I want to evaluate [new marketplace/platform] before investing time as a seller. Help me assess it using platform business model criteria: Has it solved the chicken-and-egg problem? What is the fee structure and how does it affect my margins on [type of product priced at £X]? What are the platform's incentives vs. mine as a seller? And what are the early signs that a platform is losing relevance I should watch for?
Help me design a micro-platform layer inside my existing creator business. I currently sell [products] on [platforms] and have [X] email subscribers. What simple mechanisms could I add — a curated resource directory, a peer community, a referral network — that would give my audience reasons to interact with each other through me, increasing my stickiness and reducing my dependence on any single platform's algorithm?