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Ethereum's future: are l2s taking over the mainnet?

Ethereum's Future: Layer 2s Surge | Mainnet as Settlement Layer?

By

Hassan Al-Sayed

Aug 14, 2025, 12:36 PM

Edited By

Ali Khan

2 minutes needed to read

Illustration showing Ethereum Layer 2 solutions as separate chains linked to the main Ethereum network, highlighting a busy off-chain environment

As Ethereum's Layer 2 (L2) solutions advance, the community debates whether most activities will shift off the mainnet, leaving it primarily responsible for settlement. As costs remain high on the base layer, can Ethereum sustain significant on-chain activity moving forward?

L2 Adoption Grows Rapidly

With L2s evolving, many people are optimistic about the potential for increased scalability. Comments circulating on user boards indicate a clear consensus: the current mainnet can't handle global adoption without the integration of L2 technology. One participant noted, "You can't scale for global adoption with mainnet."

Mainnet’s Everlasting Role

Despite the push for L2s, some believe the mainnet will still play a crucial role. According to one commenter, "Liquidity pools will always be based on L1. It will still be useful due to fees paid in the native token." This indicates that while activity may migrate, foundational elements like liquidity will remain tied to the mainnet.

Opinions Diverge Amid Growth

While many people support the shift to L2, some express skepticism about completely abandoning the mainnet. This sentiment highlights ongoing concerns regarding costs and the ability to generate ample on-chain activity without incurring significant fees.

"Ethereum will and is scaling both," another user stated, stressing the importance of maintaining the mainnet while simultaneously pushing for L2 enhancements.

Key Insights

  • πŸ”Ή Increasing optimism: Most people favor L2 solutions to enhance efficiency.

  • πŸ”Έ Mainnet's importance: Concerns persist about liquidity and foundational support tied to L1.

  • πŸ“Š Users seek balance: Ongoing dialogue encourages a hybrid approach without overshadowing the mainnet's role.

Forecasting Ethereum's Evolution

As Layer 2 technologies gain traction, there’s a strong chance that Ethereum will see a notable shift in on-chain activity toward these solutions, primarily due to their capacity to alleviate congestion and lower transaction fees. Experts estimate that over 60% of transactions could migrate away from the mainnet within the next year if scalability continues to improve. This could leave the mainnet functioning mainly as a secure settlement layer. However, the desire for liquidity will likely keep many foundational activities rooted in Layer 1, suggesting that a blended ecosystem will persist. Continuous innovation in both layers will be critical in maintaining Ethereum’s competitive edge in the crypto market.

Historical Echoes of Technological Shifts

This scenario is reminiscent of the transition from steam engines to electric locomotives in the late 19th century. While many initially feared that electric trains would render steam engines obsolete, they ultimately coexisted, each serving distinct needs within the transport network. Just as steam engines provided the foundational infrastructure for rail travel, Ethereum’s mainnet may retain its value well into the future, adapting alongside innovative Layer 2 solutions, much like a loyal steam train still chugging alongside its faster electric counterparts. This evolving relationship highlights how foundational technology can sustain its relevance even as advancements push the boundaries of efficiency and performance.