DALLAS (CBSDFW.COM) – The Dallas Mavericks are the defending NBA champions, but they may not have a chance to defend their title this year. The NBA has cancelled all of their games through the end of November, including Tuesday night’s scheduled opener against the Chicago Bulls at home at the American Airlines Center.

The continued NBA lockout has now cost the Dallas Mavericks more than a quarter of the regular season. With 23 games cancelled so far for this season, the impact is being felt off the court.

What does it mean to the teams, the players and just as importantly, the people whose livelihoods depend on work at the AAC?

Dr. Patrick Rishe is a business professor at Webster University who focuses on the business of sports.  He says it’s not the owners or players who are suffering right now.  “The owners have a little more resources to buttress themselves… but ultimately the people who are hurt the worst are those counting on game day revenues.”

Economically speaking, when the Mavs hit the hardwood, more people spend money on food, drinks and socializing.

For Mike McRae, the owner of Dick’s Last Resort near the arena says the lockout means lost revenue each night there is no game. “On a Thursday night, the difference would be we’d lose 25 percent of business. We lose 50-60 dinners, due to not having basketball.”

Dallas taxi owner Tom Hebtetsion says the lack of games comes down to simple economics. “It’s no income. The less people, the more we get hurt.”

As of November 1, 9 home games have been cancelled for the season, but as labor negotiations have broken down, there is no way for businesses to know when they’ll rebound.