Yea, they are good at many sub genres of music, but not everyone is into all of them, or just not in the mood for death metal, jam band, EDM, Folk, and microtonal kazoo music all at one time lol.
(Saw them at Red Rocks last year for all 3 shows, everything was great live)
I think they used a combo of self and indi publishing options early and then made their own label. They even released an album for free. So I assume they have low overhead, and just crank out albums.
They also probably make a ton of money touring.