There are 11,000 Farcaster Hubs right now.

What's the incentive for people to pay for a server and maintain a hub?

Building paywithglide.xyz. ex Robinhood, Uber, Apple

Access to the data. I suspect people think there will be some future reward for running one despite having told me people there won't be (since there's no easy way to validate you were running a Hub correctly, all the data was there, it was performant).

I can imagine some people might hope for reward because of this sentence in Farcaster docs