I'm impressed you looked it up.
If individuals want to contribute to build some athletic complex, that's their prerogative. ULL (plus LATech and ULM) don't remotely pay their way as athletic programs, hence the direct institutional support being so large. If they were at their natural level based on the marketplace, they'd be Div. 1AA.
Think of it like welfare recipients, who buy their groceries with food stamps (direct institutional support) so their money is freed up to buy beer and cigarettes (athletic complex).