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Are layer 2s good for Ethereum, or are they ‘extractive?’

Are layer 2s good for Ethereum, or are they ‘extractive?’

Layer 2s have been a great blockchain success story. They’ve reduced congestion on the Ethereum mainnet, driving down gas fees while preserving security.

But maybe they’ve become too successful, drawing chain activity and fee income from the parent that spawned them? At least that’s what some are suggesting lately, most recently at Cornell Tech’s blockchain conference in late April.

Indeed, some think Ethereum should be a little greedier, or at least fight harder for a bigger part of the revenue pie, particularly sequencing fees. 

“People in the Ethereum Foundation [the nonprofit that supports the Ethereum ecosystem] will tell you that, ‘Yes, we effed up by being too ivory tower.’ I have heard that multiple times,” said David Hoffman, an owner at Bankless, during a panel discussion at the Cornell Tech event in New York City on April 25. 

Hoffman, left, at Cornell Tech’s blockchain conference. Source: Andrew Singer

Elsewhere, Hoffman has urged Ethereum to make a “strategic pivot,” noting that the crypto environment has changed in the last few years. Ethereum no longer has the “luxury of being a peace-time research project…. exploited by its competition.”

L2s are reaping millions of dollars in transaction order fees (sometimes called sequencing fees), but none of these revenues are being passed on to Ethereum, according to James Beck, head of growth at ENS Labs and another speaker at the New York City conference. Beck told Cointelegraph:

So, this cultural layer of podcasters and researchers are saying, ‘Well, the price of ETH has been dropping compared to these other tokens. What do we do to make Ethereum more powerful?’

In short, Ethereum is a neutral verification layer, but the Ethereum mainnet is not being fairly compensated for the work that it is doing. Centralized for-profit L2s like Base, Optimism and Arbitrum are gathering the lucrative sequencing fees while enjoying the security and liveness guarantees of the Ethereum mainnet at relatively little economic cost.

L2s soared after Dencun upgrade

L2 rollups are a recent innovation; they only emerged in 2023. The idea was to reduce chain congestion and gas fees by moving transaction processing from the main blockchain (layer 1) to separate chains that sit atop the mainnet (L2s). But transaction processing is arguably the most profitable part of the revenue game, especially when users opt to pay priority fees to get their orders processed faster.

Fee-sharing was rarely much of…

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