Not too long ago, there was a time when opening Substack felt really different from opening Instagram or Twitter. The length of the writing was greater. It was a slower tone. Before speaking, someone had truly considered what they wanted to say. It was like finding a quieter room in a very noisy building for some readers, those who missed the days of carefully edited personal essays and trusted individual voices. Even though it was short-lived, that feeling was genuine. And it’s likely what initially attracted thousands of writers and millions of readers to the platform.

It’s more difficult to find that feeling now. The signal-to-noise ratio has changed in ways that are hard to ignore, but it’s not impossible—there are still writers on Substack producing truly thoughtful, original work. Once marketed as a counterbalance to algorithmic content, the platform now features its own feed, leaderboards, and recommendation engine that elevates some voices while allowing others to fall to the bottom. The escape hatch turned into a separate space, and it quickly began to fill.

A specific narrative is revealed by the numbers. On a single platform, over 63,000 active newsletters were vying for readers’ attention by 2025. For early adopters in 2021 and 2022, growth felt almost automatic, but by mid-2025, it was grinding. Authors who had established themselves through steady publication began to report flatlines. Others saw their growth drastically reverse after riding the viral Notes wave of late 2024 and early 2025, with some gaining thousands of subscribers in a single month. Compared to their peak, some reported a 70–90% decline in new monthly subscribers. The phrase that kept coming up in writers’ own posts about the situation was “bubble burst.”

The actual events that took place during that bubble were instructive. The subscriber numbers appeared remarkable from the outside when Substack’s Notes feature began to generate explosive growth in late 2024. However, by most accounts, a sizable percentage of those new subscribers were low-engagement arrivals—individuals who had tapped a button while perusing a feed rather than readers who had deliberately opted to receive lengthy essays in their inbox twice a week. The paid numbers plummeted after Substack’s trial gifting period ended. In a matter of weeks, writers who had rejoiced over their rapid growth were confronted with a 40% decline in paid subscribers. It seemed like a betrayal. The platform had momentarily obscured the distinction between a social media follow and a true readership commitment.

Beneath the growth narrative, there is a structural issue that is not sufficiently addressed: readers find it extremely challenging to maintain the economics of subscription reading. A reader who wished to support ten writers they like would have to spend $600 annually on newsletters alone, given the hundreds of intriguing newsletters available and the minimum subscription fee of $5 per writer per month. The majority of people won’t do that. They’ll choose two or three, cover the cost of those, and secretly feel bad about the others. This means that while the pool of reader budgets available to support paid writers continues to grow, the competition for a piece of that pool becomes more fierce with each new newsletter that is released.

Category Details
Platform Substack
Founded 2017, San Francisco, California
Co-Founders Chris Best, Hamish McKenzie, Jairaj Sethi
Valuation (2025) $1.1 billion
Funding Round (July 2025) $100 million, led by BOND and The Chernin Group
Active Newsletters (2025) 63,000+ competing for reader attention
Platform Revenue Cut 10% of all paid subscription revenue
Estimated Annual Revenue ~$45 million
Free-to-Paid Conversion Rate Typically 1–3%
Subscriber Growth Drop (2025) Some writers reporting 70–90% decline in new monthly subscribers
Paid Writers Earning $1M+ 50+ (per Substack’s own figures — the vast minority)
Key Platform Features Added Notes (feed), Recommendations, Livestreaming, Leaderboards
Reference Links Substack Official Site / Substack Writers at Work — Why Subscriber Numbers Have Fallen
The Substack Plateau: What Happens When Everyone is a Paid Writer?
The Substack Plateau: What Happens When Everyone is a Paid Writer?

As the platform develops, it appears that Substack is managing a conflict that it hasn’t completely resolved. In July 2025, it raised $100 million at a valuation of $1.1 billion. The 10% subscription cut, which generates an estimated $45 million annually against that valuation, creates a gap that needs to be filled because investors at that valuation require returns—meaningful, growing returns. One of Substack’s co-founders, Hamish McKenzie, explicitly distanced the platform from advertising for years, calling the ad-supported model flawed. He is now discussing “native forms of advertisement within the Substack ecosystem.” Anyone who has observed other creator platforms go through the same cycle won’t be surprised by this. It was Facebook. It was done by YouTube. It was Instagram. Regardless of the original vision, the logic of investor returns typically leads to the same conclusion.

Ironically, the issue isn’t entirely related to Substack’s product choices. It concerns what happens to any platform when the publishing friction is eliminated. Difficulty serves as a filter. When publishing an essay necessitated editing, revision, and the participation of others who might say “this isn’t ready yet,” that friction limited the output. The output increases significantly when anyone can publish anything to a paying audience with a few clicks, but the growth isn’t split equally between quantity and quality. The majority of it lands in large quantities. As a result, the landscape is technically rich in writing but progressively lacking in concepts that an AI trained on the newsletter advice content from the prior year could have produced.

Some authors are doing a good job of handling this. The top performers aren’t publishing reactively five times a week to remain visible in a feed or chasing growth mechanics. They are taking their time, writing about topics so narrowly focused that only a small percentage of readers truly connect with it, and viewing the newsletter as a relationship rather than a product. One example of what Substack’s original promise looked like in practice is Hannah Ritchie, a data researcher with 56,000 subscribers who publishes every one to two weeks and has never enabled paid subscriptions. She writes out of genuine curiosity and gains readers through consistency rather than virality. She is not the model that the platform’s growth mechanics currently reward; rather, she is the exception.

For independent writers, the plateau is not a death sentence. It’s more akin to a correction—the point at which an experiment that momentarily appeared to be a gold rush turns out to be a career, complete with the patience and uncertainty that careers demand. The authors who came to Substack with the expectation that the platform would handle audience building or that growth would come naturally from publishing are now characterizing their experience as disillusionment. Regardless of the numbers, the people who came to write are still writing.

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Marcus Smith is the editor and administrator of Cedar Key Beacon, overseeing newsroom operations, publishing standards, and site editorial direction. He focuses on clear, practical reporting and ensuring stories are accurate, accessible, and responsibly sourced.