這個你就想當然了，看下Rockets例子

Financing Information
The city (City of Houston) spent $20 million on the land for the arena. The sports authority (Harris County-Houston Sports Authority, government agency) sold $182 million in bonds to build the arena and secured $125 million of that with money from hotel and car rental taxes. The garage project is paid for by a private business. The Rockets are responsible for cost overruns and have pledged to spend $20 million on enhancements.

--------- 地方政府隻投進個小頭：$20 million

Rent: the Rockets will pay to the Sports Authority annual rental of $8.5 million

-------- 明擺著地方政府賺了, $20 million 撈個 $200 million 的場館。