Ethereum surged back above $4,000 in September 2025, powered by Digital Asset Treasuries (DATs) accumulating ETH and supportive stablecoin legislation. The big question now: can Ethereum sustain this momentum? We break down how DATs influence token supply and long-term sustainability, what rising mainnet activity means for users, and how continued Layer-2 scaling is setting the stage for Ethereum’s next chapter of growth.