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.

$0 because Warpcast's API is really good.

On a similar note: Stacks/Gaia also had its own "hub" (data layer). Didn't go as planned, might be an interesting discussion to read:

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

$0 because Warpcast's API is really good.

On a similar note: Stacks/Gaia also had its own "hub" (data layer). Didn't go as planned, might be an interesting discussion to read: https://forum.stacks.org/t/rfc-moving-gaia-data-to-home-computers/14706/6