I never understood why universities need competitive sports facilities in the first place (except when it's required for the curriculum, e.g. where sports medicine is offered). I suppose it's something to do either with tradition ("our sports team has been the best for over a century") or income from sponsorship and merch sales, but not sure.
This is just one example, but my university recently revamped their football stadium due to a huge donation from an either an alumni or coach (I can't remember exactly) who donated specifically for this cause. If money comes from a donation, sometimes it's not the school's decision how money should be spent.