Arbitrum, Polygon and MegaETH push beyond blockspace as chains hunt for app-level revenue
Selling blockspace is no longer a strong standalone business for blockchain networks, according to a new analysis from Castle Labs Research translated by TechFlow and published by MarsBit. As infrastructure gets cheaper and more interchangeable, the gap between application fees and chain-level fees keeps widening, leaving many networks with growing usage but weaker direct revenue capture. The report groups recent responses into two tracks. One is ecosystem expansion, where chains such as Arbitrum and Polygon try to earn more through infrastructure distribution, payments, and revenue-sharing arrangements. The other is product expansion, where networks such as MegaETH and Sophon move closer to the application layer and try to internalize value that would otherwise accrue to third-party builders. The piece highlights Arbitrum Stack’s revenue share from Robinhood’s L2, Timeboost’s treasury contribution, Polygon’s role in stablecoin payments, MegaETH’s first-party app strategy and USDm stablecoin model, and Sophon’s shift away from operating its own chain. The broader argument is that chains are no longer content to remain neutral infrastructure providers. More of them are trying to become ecosystem operators, application owners, or both, as they search for revenue models that can better support token value and long-term sustainability.








