I'd be willing to wager that Cue N Cushion does more revenue and more profit in one day then all of the other St Louis area pool rooms combined. Unfortunately we don't have access to the data. You clearly are thinking with a skewed view based on your personal issue with them but if you weren't so pidgeon holed, you would see it.
That would seriously shock me. They always seem to have a steady stream of cheap players. They do not even sell alcohol. If they did not already own the building and have pre-existing equity repaid over they years I do not see how they could be making money. Maybe they sell more equipment and cues than I can imagine. I would expect Side Pockets (though not a standard pool hall) to do a LOT$$$$ more revenue and profit.
Cue and cushion
17 paid for tables x 2 people x 15 hours x $3.60 per hour = $1,836 if every single table was busy the entire day with no specials and no discounts.