The profit brought in by an arena isn't all that much compared to the enormous investment and expense it costs to build and maintain it. The Maloofs don't want to pay the lion's share simply because it doesn't make business sense, and because the city has an equal or greater amount to gain from such a project materializing.
The ownership, I'm afraid, is the least of the Kings' concerns
The ownership, I'm afraid, is the least of the Kings' concerns