The Ethereum community has been discussing why there should still be a size limit for contract deployment. Vitalik recently shared his thoughts on this matter—this limitation is mainly to prevent DoS attack risks.

His line of thought is as follows: once Ethereum completes the upgrade of the state structure and switches to a unified binary tree architecture (which is the direction of EIP-7864), it may be possible to completely lift the limitations on contract size. It sounds great, but in practice, there is a real issue to face - how to handle the Gas costs and mechanism design when deploying super-large contracts on-chain.

The current algorithm calculates the creation cost based on each byte, which results in the actual contract size being stuck at a ceiling. It seems that the technical upgrade itself is not the problem; the key is to find a balance between ensuring network security and maintaining reasonable costs.