Do you think it would be good business to keep HA empty? Or do you think it's the only arena on Earth?
They should have to pay for it. Another expense. Running a Liiga team isn't a gold mine. Although must to admit, it's not nearly as difficult as trying to run some KHL team.
But they can't gain any revenues from other users to cover team's expenses. Plus, the services and facilities might not be as good as they used to have. Liiga-Jokerit wouldn't be Rotenberg's toy anymore. Just another paying customer.
I'm not saying it's not possible, but would be difficult at least IMHO.