As you can read about over on Consumerist, there was a bar out in Miami that "announced it would pay out $25 credits to every customer in bar on any night the team lost."
And yet they did well (the team and the bar)
"It's great business for us," Todora said. "Our marketing philosophy is that we want to be the loudest kid in the room. It's no secret that Florida is a very fair weather state in terms of their rooting interest of their teams. When the Heat weren't playing well, bars around us were complaining about lack of business. But we retained our customers."
Beyond that, Todora says the average person at the bar spent around $30 on the nights when the Heat played, around 36% more than the average check on a non-game night. So the extra money from those nights helped to defray the costs of the nights when he only netted $5/check.