Yes, its unfortunate that as AFL finishes, the NBL will not be there to fill the gap as it usually does. I might have to start watching Cricket.
Or hopefully there will be good coverage of the WNBL hub?
As many others have pointed out, its combination of Covid presence in Melbourne, crows and travel restrictions elsewhere, and hard borders in some states and NZ.
In regards the AFL, it was able to work around it for the following reasons:
1) Until the WA hub was finished, the AFL kept up the pretence of considering Perth for the finals, thus ensuring cooperation. For the elimination final, they offered to allow it to be played in Perth, but only if quarantine could be navigated.
2) During the Perth Hub, and the earlier hubs, AFL was only played once a week, making it easier to work with quarantine periods. For the EF there was an extra weeks gap.
3) Teams were not coming from Melbourne or Sydney, so the risk of anyone actually having the virus was lower.
4) The AFL could afford to have people sitting in hotels for weeks.
5) If you look at how the Perth hub operated, visiting teams were only allowed to play the Eagles or Dockers at the end of their 2nd week in Perth.
6) The AFL has a stupendously lucrative TV deal, so there was massive incentive for them to get as many games as possible televised, even if that meant playing them in bufu FNQ.
The NBL generally loses money anyway, and the revenue it does get is mostly bums on seats. To get the season running under the current circumstances, they'd have to relocate, at a minimum, MU, SEM, NZ, and Perth (not sure about SA's borders?) So ok, you could start with those teams just playing a bunch of away games in QLD and NSW, but then what? If the restrictions aren't eased, you'd have to start playing "home" games away, and then games in "neutral" cities with only a handful of people watching.
It MAY still come down to that. But if it does it will need to be a very condensed season, just to try and contain the costs.