[kbenson]

> For fiction, however, the dream combination is probably publishing in-progress with subscriptions. Currently it seems that Substack is the best for that.

Depending on audience and how you advertise to them, I've seen people be really successful on Patreon. I outlined some of that in a different comment here earlier, but $15k+ a month (from Patreon alone, not including other publishing that you can also do) is achievable and I've seen it more than once on somewhat esoteric genre fiction at Patreon.