hint
party record with a siren
I think you're reading too much into it - comes up quite often on Dissensus, I think, this kind of second-guessing peoples' motivations in music.
DJs start labels because they think they'll be good at it. If they didn't think they were good at picking tracks people might like, they wouldn't be DJing, would they? It's a natural fit. If you DJ for a while and talk to people, sooner or later you will be passed some unsigned music that you think should be released.
It certainly doesn't make much financial sense to start a label just to get more gigs.
DJs start labels because they think they'll be good at it. If they didn't think they were good at picking tracks people might like, they wouldn't be DJing, would they? It's a natural fit. If you DJ for a while and talk to people, sooner or later you will be passed some unsigned music that you think should be released.
It certainly doesn't make much financial sense to start a label just to get more gigs.