In 2025, according to The Block's 2026 Digital Assets Outlook, activity on Ethereum Layer 2 networks became heavily concentrated on a few ecosystems, with Coinbase's Base capturing a leading share of TVL, users and onchain volume. While enterprise and consumer platforms increasingly launched rollups built on stacks such as OP Stack, most new L2s saw usage fade after incentive and airdrop cycles, even as data availability, security models and Bitcoin L2 experiments diverged in preparation for a more competitive 2026 landscape.