Robinhood Chain's economic model remains at the center of a dispute between Arbitrum co-founder Steven Goldfeder and Solana co-founder Anatoly Yakovenko, now extending beyond published network fees to the hidden trading costs associated with maximal extractable value, or MEV. Goldfeder said Arbitrum One and Robinhood Chain actively seek to limit harmful MEV, including front-running and sandwich transactions, and argued that some networks promoted for low fees impose larger implicit costs on retail traders through those practices. Yakovenko responded that Arbitrum currently has wider bid-ask spreads and higher fees. He estimated that the cost associated with Arbitrum's 10% revenue share alone exceeds sandwich-transaction rates and that total costs are roughly ten times higher when wider spreads are included. He also argued that a single-sequencer model designed to maximize shareholder returns cannot outperform permissionless market competition. The latest exchange builds on a broader debate over whether Robinhood creates more value by operating an Arbitrum-based Layer 2 rather than offering its services on Solana. DeFiLlama data previously cited by PANews showed Robinhood Chain generated $2.9 million in fees over 24 hours and $2.61 million in chain revenue during the same reported period, while its DeFi total value locked reached $909 million. Robinhood directs 10% of net protocol revenue to the Arbitrum ecosystem, while retaining the remainder after relevant costs, including Ethereum data-posting expenses. The scheduled end of its 90-day gas subsidy remains a key test of whether activity and fee revenue persist when eligible Robinhood Wallet users begin paying gas directly.