USF is actually very active. I'll go to bat for it any day as a working studio. Commercials are filmed there all the time, the local lottery films from their daily, there is a film school in one of the stages and then there's the occasional major filmings/shoots in the stages (The Tonight Show this summer just for one example). Plus TNA still comes in every once in awhile and films there. USF is very much a working studio. Maybe not as active as it was originally intended to be, but it still gets a lot of business because they have the best facilities in Florida.
Unfortunately for Uni, places like Louisiana and Georgia are booming in the east coast film industry bc of their tax incentives. Not to mention the beautiful on-location scenery. Universal can't provide that as they are in the middle of Orlando. Nothing beautiful about Orlando.