Synthetix founder Kain stated in a post that the Ethereum mainnet is facing economic pressure due to the diversion of transaction activities to L2 scaling and the introduction of Blob in EIP-4844 to reduce data availability costs. Kain believes that the rise of L2 has diverted profits that originally belonged to the mainnet, and in the future, shifting towards solutions like Alt DA such as Celestia may further weaken the profitability of the Ethereum mainnet. To address this issue, he proposes that in the short term, L2 can contribute back to the mainnet through official L2 or rental mechanisms, while in the long term, it will be necessary to rely on new demands such as tokenization of real assets to increase the overall usage of L1/L2.