You sort of preempt these things, and I would suspect NBL1 level GF's requires neutral fans, i.e the real die hard basketball community.
I look at NBL1 West. It looked like a Geraldton-Rockingham final by round 17. I asked if they were home gf's, or neutral venue. I didn't fancy driving 5+ hours to Geraldton for a final.
I would suspect very few Rockingham fans would drive to Geraldton, let alone the fans of the other 12 non-Geraldton sides.
Alas, it's as a neutral venue. I would suspect BWA appreciates this, and to fill Bendat requires a lot of neutrals... the bonus being 2,000 extra seats compared to Geraldton's home court, and the price at +$10 per ticket, compared to regular season home games.
This would give BWA a sizable chunk of it's year round revenue. I'd be saying in the vicinity of +$40,000, so another wage.
If anything is folly, it's allowing a Tasmania team and SA team into their comp. Why isn't Mt Gambier in NBL1 Central? I mean how many Victorian fans are going to travel interstate for an NBL1 game?