Substack Is Having the Time of Its Life. And It Has Elon Musk to Thank.

There is a moment in every slow-motion disaster where the person responsible looks up, surveys the wreckage, and announces that everything is going exactly to plan. That is essentially what is happening at X right now, and the writers fleeing the scene are landing, slightly bewildered but mostly delighted, on Substack.

Substack now has five million paid subscriptions, a number that would have seemed delusional three years ago. It raised $100 million in July 2025 at a valuation of $1.1 billion, and in just one quarter, 32 million new free subscriptions came from inside the app itself, not from Instagram, not from LinkedIn, not from anywhere else. Readers finding writers inside Substack, without ever leaving the platform. The ecosystem is feeding itself, in the best possible way.

Meanwhile, over at X, the world’s richest man has been conducting what can only be described as a masterclass in destroying something that worked. X currently generates roughly $2.9 billion in annual revenue, which sounds almost acceptable until you remember that Twitter generated $5.1 billion in its last full year as an independent company. That is a 43% collapse, achieved with such apparent enthusiasm that you begin to wonder if it was deliberate.

Advertiser trust in the platform has fallen from 22% in 2022 to just 12% by 2024, and Kantar says the slide is accelerating. In the UK alone, X’s revenue dropped 58% in a single year, and the company itself acknowledged in its own strategic report that brand advertisers were fleeing over “concerns about brand safety, reputation and content moderation.” When your own filing reads like a resignation letter, something has gone badly wrong.

The creator situation is, if anything, more farcical. X has changed its monetization criteria and formulas multiple times between 2023 and 2025, meaning that creators who thought they understood the rules woke up regularly to find the rules had quietly moved without notice, explanation, or apology. In March 2026, X’s head of product announced a significant change to creator revenue sharing, then retracted it entirely within hours after the backlash reached Musk. Announced. Retracted. In one afternoon. This is not platform governance. This is someone making it up as they go.

To even qualify for monetization, creators must generate 5 million organic impressions every three months, and only impressions from users who themselves pay $8 a month to use X actually count toward that total. Most intelligent, thoughtful writers with serious things to say do not produce five million impressions a quarter, because they are not screaming provocations into the void for nine hours a day. They are writing. Which is precisely why they are moving to a platform that rewards the act of writing.

The migration has been supercharged by serious names. Former CNN anchor Jim Acosta amassed over 10,000 paid subscribers within weeks of joining Substack in 2025. Justin Welsh became a platform bestseller within 48 hours. These are not people hedging their bets. These are people making a deliberate choice about where their work belongs.

The beautiful irony is that Musk set out to build the “everything app,” so dominant and so essential that nobody would ever need to leave. What he built instead was a platform so chaotic, so monetarily unreliable, and so politically toxic that major brands including Disney, Apple, IBM, Comcast, and Warner Bros. have all suspended their advertising, and the writers who built their audiences there are calmly walking out with their readers tucked under their arm.

Substack did not steal X’s creators. X evicted them. And the new address, it turns out, pays rather better.

So where are you in all this? Still posting into the void on X, watching your impressions evaporate and your monetization rules change overnight? Or have you already quietly packed your bags and moved in here? And if you have, what finally pushed you over the edge?