Why Only 3 Builders Control All of Ethereum

They dissect the true journey of a transaction, revealing why over half of all Ethereum transaction value bypasses the public mempool in favor of private order flow auctions and MEV-protection services . Kubi explains the intricate mechanics of top-of-block bidding by high-frequency DeFi arbitrageurs, the necessity of extreme latency optimization, and the flywheel effect that makes block building a natural oligopoly . Finally, the discussion turns to the future of the Ethereum roadmap, unpacking how upcoming upgrades like ePBS (enshrined Proposer-Builder Separation) and FOCIL (Fork-Choice Enforced Inclusion Lists) aim to permanently alter the power dynamics between block builders, validators, and originators . Topics04:15 Transitioning from TradFi Trading to Ethereum Block Building09:30 Redefining the Builder: Relays and Order Flow Auctions15:00 Unpacking the Mempool: Public vs. Private Transactions21:45 The Anatomy of a Block Top-of-Block Arbitrage27:10 How Builders Pay Proposers to Win Auctions35:20 The Oligopoly: Why Only 3 Builders Dominate Ethereum42:15 Trust in the Dark Forest: Handling Searcher Bundles49:00 The Convergence of Builders and Solvers55:30 The Impact of ePBS, FOCIL, and Pre-confirmationsSponsors: Lido V3 introduces stVaults: a modular staking infrastructure that lets builders and institutions deploy custom staking vaults, while staying anchored to stETH as a shared liquidity layer.Get started building with Lido V3 today: https://lido.fi/stvaults?mtm_campaign=epicenterBlock Space Forum: https://blockspace.forum/