As a general rule, government enterprise operations like airports and utilities are usually well-run because they are structured to run like businesses and to rely on operating revenues instead of taxes. Run the business badly, or overcharge or mistreat the customers and they complain and go elsewhere.
For major commercial airports like LAX, the airlines act as a brake against folly and mismanagement because the airport relies heavily on revenue from landing fees and fuel charges imposed on airlines. In extreme cases, airlines stop reduce their flights to badly run, overly expensive airports. I am confident that the LAX People Mover project would not have gotten off the ground without the approval and support of the airlines who are most on the hook to pay for it.
Thanks for that info. Still, a one or two mile team inside a single airport is scheduled to cost several times more than congress is willing to allow for our Mexico border fence (just about 2,000 miles). Something to think about