Assume it was 1-click and 100% automated to deploy, run and update a Hub.

How much per month would you be willing to pay to run one? 

No direct economic incentive other than you know you're supporting Farcaster decentralization and you have your own copy of the network.

OK, if you're answer is you wouldn't run one.

Working on Farcaster and Warpcast. Longer thoughts at https://dwr.email

$20/30 per month if I knew it was going back to the protocol itself

One click to deploy would be huge, espc. if there’s continued support for data replication w/ Postgres