Robinhood Chain Fee Windfall Rekindles Arbitrum vs. Solana Fight Over Who Captures On-Chain Value

CoinDesk reports that a sharp spike in Robinhood Chain fees has reignited debate over why the network opted for Arbitrum's stack instead of building directly on Solana. On Sept. 6, Offchain Labs cofounder Steven Goldfeder and Solana cofounder Anatoly Yakovenko took the argument public, with the discussion centering less on per-transaction costs and more on how on-chain revenue is distributed. Under the Arbitrum Expansion Program used by Robinhood Chain, 10% of on-chain net protocol revenue is directed to the Arbitrum ecosystem: 8 percentage points to the Arbitrum DAO treasury and 2 percentage points to developer grant programs. Goldfeder said the structure still leaves Robinhood with about 90% of net on-chain revenue, stressing this is net income after expenses such as publishing data to Ethereum, not gross fees. The report said Robinhood Chain's daily fees at one point reached $6.04 million. After accounting for costs and the revenue split, roughly $5.44 million was retained. Over the past seven days, revenue totaled about $20.33 million, though the article cautioned that the figure reflects short-term elevated activity and should not be read as a stable annual run rate. At the heart of the dispute is who ultimately captures the value generated by activity on the network. Yakovenko argues Robinhood could have deployed on Solana without running its own Layer 2, subsidized users' transaction costs internally, and monetized through its application interface, avoiding the overhead of operating a separate L2. Goldfeder countered that this approach mainly monetizes user flow that stays inside Robinhood's own frontend. If third-party wallets, trading bots, decentralized exchanges, or token platforms interact with the contracts directly, the resulting network fees would accrue to Solana validators and stakers, not Robinhood. By operating sequencing infrastructure on Robinhood Chain, he argued, Robinhood can earn fees from on-chain transactions even when they bypass its brokerage interface. That dynamic has become more relevant as external apps drive activity. Meme coin platform Pons and trading platform GMGN have recently emerged as major traffic sources on Robinhood Chain, with some transactions originating outside Robinhood's own frontend. A key date is Sept. 29, when Robinhood's 90-day gas subsidy for transactions initiated through Robinhood Wallet is set to expire. During the subsidy period, activity surged, with average daily DEX trading volume around $1.71 billion and total value locked in native protocols roughly $1.17 billion. Whether that growth holds once users pay their own gas remains unclear. Bitquery previously found Robinhood Chain's gas prices rose about 25x over 11 days, with a meaningful share of new demand tied to a small number of highly active wallets, suggesting fee revenue may be concentrated. After subsidies end, attention will focus on whether Robinhood Wallet users stay active and whether volumes driven by external applications such as Pons, GMGN, and Uniswap persist. Robinhood has not said whether it will extend the subsidy, and it has not detailed how on-chain revenue will be reflected in its financial statements. From a business-model standpoint, the debate is less about which chain offers lower transaction fees and more about whether owning a Layer 2 captures more revenue than deploying apps on existing Layer 1s. Robinhood Chain's first full phase after subsidies may offer a clearer test.