One of the coolest things for me was seeing a musician start out, and then several months later seeing that they'd blown up. And this happened often! There are a lot of musicians (artists too, etc) who never would have surfaced.

People say "you can just post on xyz" and yet none of those places surface these kinds of creators.

Many of the other sites are either pay-to-play at this point, or surface content that aligns with something they're looking to surface.