How A Live Music Venue Actually Makes Money
Rarely from tickets. The bar and the deal structure decide whether the night worked.

Small and mid-sized music venues operate on economics that surprise most audiences, and the ticket price is only loosely connected to whether the venue had a good night.
The deal with the artist
Venues and artists agree a structure in advance. Common forms include a guaranteed fee to the artist, a split of ticket revenue after defined expenses, or a combination in which the artist receives the greater of a guarantee or a percentage.
In many arrangements the artist takes the large majority of the door on a successful night. The venue's exposure is that the guarantee is payable whether or not the room fills.
The bar
For most independent venues, beverage sales are the principal source of profit. This is why the length of a set, the number of support acts and the timing of doors are commercial decisions as well as artistic ones.
It also explains why a well-attended show by an audience that does not drink can be a financially poor night.
Fixed costs
Rent in the neighbourhoods where these venues operate, sound and lighting staff, security, insurance, licensing and equipment maintenance are all payable regardless of attendance.
Sound equipment is a continuing capital cost, and a venue with a reputation for good sound has invested in it.
Fees
Service charges added to tickets are frequently shared between the venue and the ticketing platform, and they fund costs the face value does not cover. They are unpopular and they are structural.
Why venues close
The recurring pattern is a rent increase in a neighbourhood the venue helped make desirable. Music venues have low margins and cannot outbid the uses that follow them, which is why the map of live music in New York keeps moving outward.
What actually helps
Arriving early enough to see the support act, buying merchandise directly from the artist, and buying a drink at the venue rather than beforehand all matter more to whether a room survives than the ticket price does.