Creative camaraderie.
We are more likely to go to the gym when we have a gym buddy to go with. We have an implicit desire not to let our friend down. And it works both ways.
When we try to do creative work on our own, we might find it difficult to show up consistently. But if we schedule time with our creative friends, the struggle to show up reduces significantly.
Creative work, quite similar to going to the gym, is more about being consistent, than about having one or two good days.