> Is the "common enterprise" here supposed to be Coinbase, or the Ethereum network itself?
Coinbase, and Coinbase's pool(s). As you cite, "using validator nodes operated and maintained by Coinbase". Coinbase and the staking users are engaged in a common enterprise for mutual profit.
Coinbase, and Coinbase's pool(s). As you cite, "using validator nodes operated and maintained by Coinbase". Coinbase and the staking users are engaged in a common enterprise for mutual profit.