The subscription actually does work and could (will?) be enough to sustain us. But we didn't roll it out in a way that's congruent with anything else we were doing.
Most notably, the subscription implies that we have some premium content to share. But instead of incentivizing premium content we spent the subscription revenue to pay people to flood us with low quality click bait and content mill articles. Of course, that's not what we set out to do. But it's effectively what happened. I'm partly through reversing it.