Its simple- better marketing.
Let people know theres a basketball game, ads on t.v for '' friday night game at sydney entertainment centre''
There would easily be enough people in sydney that would love to go to a basketball game, but its not marketed well enough for everyone to know.
People that arnt current fans arnt going to look up '' sydney kings game times'' on google, just randomly, but if there was tv ads for games, people would see it and people who are interesed would go, and there would be a huge increase in fans.
Honestly sydney kings, please put a few ads up for one particular game, make it interesting to the viewers, and see how many more people will attend the game.