Just to avoid any ambiguity, when I said "So why are we doing it?, I meant organising clubs, not failing to book.
My answer to that is "The Music". While one or two may be doing it for the power and the glory, I think most are doing it to share the music they love with other people, both performers and audiences. I don't think any organisers are in it for the money.
Yes, we'd like bigger audiences for the music we like. I don't see that putting on music we don't like achieves that.