Consider a couple similar situations:

1. Many teachers don't publish, and those that do publish often still reserve their best for their students.

2. OS development sometimes operates like esoteric societies: you publish enough that people with the desire and insight become interested and engaged - both a filter and an invitation. So you can tailor the community you like.

Both depend on people really valuing these mutually-constitutive relationships.

My observation is that the generations raised on social media and gaming are happy enough with those substitutes, and view publishing their best work as a kind of self-promotion and participation in a larger, diffuse community (without a real role in governance). And they're right: expecting more personal communities now is a severely limiting factor, and AI removes most of the incentives to participate in someone else's project.