[seaourfreed]

We need Ethereum to always prevent this. Or the big mining pool will just do this for every block and allow ONLY THEIR blocks to be processed. Then they get 100% of mining of the ETH mining fees.

This reinforces by most miners being willing to join, to get a share in monopoly rents over miners-never-earning. The big mining pool(s) could let in enough to stay big enough. But not too many to spread the monopolistic gains by too broad a base.

[AgentME]

The mining pool would have to have >50% of the hashrate to pull that off indefinitely.