They had great dreams for ONT as an international hub but it has not happened. Now there are acres of unused parking lots that literally have weeds growing through cracks in the pavement. The economic downturn in the Inland Empire has not helped, but yes apparently LAWA gets much of the blame. Although I'm not sure how realistic the dream was in the first place.
It was also silly of them to build a remote car rental facility. (Someone's cousin probably owned the land.) Depending on where I'm going, I'll always choose BUR or SNA over ONT because you literally walk out the door and pick up your rental car.
The terminal that WN operates from is also losing tenants. Last time I was there (in January) the Coffee Bean & Tea Leaf had closed. Currently, the "best" food option is Carl's Jr.