Newsletter Publishers Flee Substack's 10% Revenue Tax for Fixed-Price Alternatives

High-profile publishers including Sean Highkin, Matt Brown, and The Ankler have migrated from Substack to Ghost, Beehiiv, and Passport since 2021. The driver: Substack's 10 percent revenue share becomes punishing at scale. Highkin pays $2,052 annually on Ghost versus $4,968 on Substack; Brown's 71,000-subscriber Extra Points saves $22,000 yearly on Beehiiv. Competing platforms' fixed pricing decouples costs from subscriber growth, eroding Substack's lock-in advantage as technical migration barriers fall.