Well, there is always affiliate income. But people on Hive hated people using affiliate links last time I was here.

There was just an announcement by InLeo of a new subscription option, to subscribe to users, which will be fully enabled with the new hard fork. Problem is that currently it's only for InLeo Pro. But with auto-renew for more than one person being enabled with the new Hard Fork, and the ability to have encrypted posts, it should, hypothetically, be possible for other front ends to also enable the feature. Would suck if you have to use InLeo.