There at least used to be a lot of real estate that was owned in common with the Lightning; there was a whole development around the Lightning's arena (which took off better than 'the district') and the Lightning ownership group manages (i.e., gets paid for managing) at least some USF Bulls sports stuff.
Appropos of nothing, my daughter went to high school with a scion of the Dittrich family. He would show up wearing giant fur coats (with the right sense of humor) at school events, ski meets, etcetera