If no crowds in Victoria there will be no NBL
I don't think that's a viable option, unless things go completely to shit.
OR, clubs can completely avoid expenses.
Otherwise, at some point, "some revenue" becomes better than "no revenue"
I don't know what the players contracts say, do they still get paid if no games? What about the staff?
How flexible are the venue contracts?
Besides, hypothetically, if the rest of Australia was fine, minimal restrictions, except for people coming in and out of Victoria, the league could easily go ahead with 7 teams.
And as discussed, I think travel restrictions are potentially more of a problem.