Incentive for running a hub

[avras]

What is the incentive for someone to run a hub?

Suppose a user installs Warpcast. They connect to some hub and download casts. The hub is paying for outgoing bandwidth. Does the hub only benefit indirectly (like running a Bitcoin node)?

[vrypan]

Does the hub only benefit indirectly

Yes.

And if you are a dev, you will need a hub to connect your app to, so you either pay for a hosted one (see Neynar) or run your own.